m-aXimilian
b37814204f
* get image returns optional<Mat> instead of unique_ptr<Mat> * introduce complexity * rename image load function * add example for a basic reader for binary image files * fix windows build? * add a status bar underneath the menu bar * use status bar in custom_0 example app * clang formats * packing w/ pragma push * add "Save As" functions to image views * resize over reserve * rm local override uri * add simple thread pool * rename to simple_thread_pool * get rid of useless renderlib * document version inc * extract hardcoded values to in-header * clang format patch * clone registered image in custom_0 * document binary-file header * minor fixes * clang format * rm unused render cmake
93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
#include "resource.hpp"
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#include <atomic>
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#include <cstddef>
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#include <functional>
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#include <mutex>
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#include "imaging/IPixelariumImage.hpp"
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using Image = pixelarium::imaging::IPixelariumImageCvMat;
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using namespace std;
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namespace
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{
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/// @brief Atomic counter for generating unique IDs.
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static std::atomic<size_t> id_;
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/// @brief Generates a unique ID.
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/// @return A unique ID.
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size_t GenerateId() { return id_.fetch_add(1, memory_order_relaxed); }
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} // namespace
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/// @brief Retrieves a resource from the pool.
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/// @param id The ID of the resource to retrieve.
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/// @return A pointer to the resource if found, otherwise an empty optional.
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std::weak_ptr<Image> pixelarium::resources::ImageResourcePool::GetResource(ResourceKey id) const
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{
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auto search{this->resources_.find(id)};
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if (search == this->resources_.end()) return {};
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return search->second;
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}
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/// @brief Sets a resource in the pool.
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/// @param res A unique pointer to the resource to set.
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/// @return The ID of the new resource.
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size_t pixelarium::resources::ImageResourcePool::SetResource(unique_ptr<Image> res)
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{
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if (res == nullptr)
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{
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throw empty_resource_exception();
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}
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auto key{::GenerateId()};
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{
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std::lock_guard<std::mutex> guard(this->mut_);
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this->resources_.insert({key, std::move(res)});
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}
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return key;
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}
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/// @brief Updates a resource in the pool.
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/// @param id The ID of the resource to update.
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/// @param res A unique pointer to the new resource.
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/// @return True if the resource was updated, false otherwise.
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bool pixelarium::resources::ImageResourcePool::ModifyResource(ResourceKey id, std::unique_ptr<Image> res)
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{
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auto search{this->resources_.find(id)};
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if (search == this->resources_.end()) return false;
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search->second = std::move(res);
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return true;
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}
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/// @brief Deletes a resource from the pool.
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/// @param id The ID of the resource to delete.
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/// @return True if the resource was deleted, false otherwise.
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bool pixelarium::resources::ImageResourcePool::DeleteResource(ResourceKey id)
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{
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auto search{this->resources_.find(id)};
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if (search == this->resources_.end()) return false;
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this->resources_.erase(search);
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return true;
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}
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/// @brief Enumerates all resources in the pool.
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/// @param func A function to call for each resource. The function should accept the resource ID and a const reference
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/// to a PixelariumImage.
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void pixelarium::resources::ImageResourcePool::EnumerateResources(
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const std::function<void(ResourceKey, size_t, const imaging::IPixelariumImage<cv::Mat>&)>& func)
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{
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size_t idx{0};
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for (const auto& e : this->resources_)
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{
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func(e.first, idx, *e.second);
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++idx;
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}
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}
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