84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
/*
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* Copyright (C) 2024 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <condition_variable>
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#include <deque>
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#include <filesystem>
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#include <mutex>
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#include <span>
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#include <variant>
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#include <vector>
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#include "core/IOContextRunner.hpp"
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#include "metadata/IParser.hpp"
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namespace lms::scanner
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{
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struct ImageInfo
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{
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std::size_t height{};
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std::size_t width{};
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};
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using AudioFileScanData = std::unique_ptr<metadata::Track>;
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using ImageFileScanData = std::optional<ImageInfo>;
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struct FileScanResult
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{
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std::filesystem::path path;
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std::variant<std::monostate, AudioFileScanData, ImageFileScanData> scanData;
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};
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class FileScanQueue
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{
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public:
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FileScanQueue(metadata::IParser& parser, std::size_t threadCount, bool& abort);
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std::size_t getThreadCount() const { return _scanContextRunner.getThreadCount(); }
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enum ScanRequestType
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{
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AudioFile,
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ImageFile,
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};
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void pushScanRequest(const std::filesystem::path& path, ScanRequestType type);
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std::size_t getResultsCount() const;
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size_t popResults(std::vector<FileScanResult>& results, std::size_t maxCount);
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void wait(std::size_t maxScanRequestCount = 0); // wait until ongoing scan request count <= maxScanRequestCount
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private:
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AudioFileScanData scanAudioFile(const std::filesystem::path& path);
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ImageFileScanData scanImageFile(const std::filesystem::path& path);
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metadata::IParser& _metadataParser;
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boost::asio::io_context _scanContext;
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core::IOContextRunner _scanContextRunner;
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mutable std::mutex _mutex;
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std::size_t _ongoingScanCount{};
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std::deque<FileScanResult> _scanResults;
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std::condition_variable _condVar;
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bool& _abort;
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};
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} // namespace lms::scanner
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