91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/*
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* Copyright (C) 2020 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 <chrono>
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#include <filesystem>
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#include <functional>
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#include <optional>
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#include <span>
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#include <string>
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#include <vector>
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#include "audio/AudioTypes.hpp"
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extern "C"
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{
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struct AVFormatContext;
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}
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namespace lms::audio::ffmpeg
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{
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struct PictureView
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{
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std::string mimeType;
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std::span<const std::byte> data; // valid as long as IAudioFile exists
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};
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struct ContainerInfo
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{
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std::optional<ContainerType> container;
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std::string containerName;
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std::size_t bitrate{};
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std::chrono::milliseconds duration{};
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};
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struct StreamInfo
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{
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size_t index{};
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std::optional<CodecType> codec;
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std::string codecName;
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std::optional<size_t> bitrate;
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std::optional<std::size_t> bitsPerSample;
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std::optional<std::size_t> channelCount;
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std::optional<std::size_t> sampleRate;
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};
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class AudioFile
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{
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public:
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AudioFile(const std::filesystem::path& p);
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~AudioFile();
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AudioFile(const AudioFile&) = delete;
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AudioFile& operator=(const AudioFile&) = delete;
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using MetadataMap = std::unordered_map<std::string, std::string>;
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const std::filesystem::path& getPath() const;
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ContainerInfo getContainerInfo() const;
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MetadataMap extractMetaData() const;
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std::vector<StreamInfo> getStreamInfo() const;
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std::optional<StreamInfo> getBestStreamInfo() const;
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std::optional<std::size_t> getBestStreamIndex() const;
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bool hasAttachedPictures() const;
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void visitAttachedPictures(std::function<void(const PictureView&, const MetadataMap&)> func) const;
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private:
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std::optional<StreamInfo> getStreamInfo(std::size_t streamIndex) const;
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const std::filesystem::path _p;
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AVFormatContext* _context{};
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};
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} // namespace lms::audio::ffmpeg
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