Split the lib in smaller libs to ease unit tests
This commit is contained in:
emeric
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/*
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* Copyright (C) 2013 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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#include "CoverArtGrabber.hpp"
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#include "av/AvInfo.hpp"
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#include "database/Release.hpp"
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#include "database/Session.hpp"
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#include "database/Track.hpp"
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#include "utils/Logger.hpp"
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namespace {
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bool
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isFileSupported(const std::filesystem::path& file, const std::vector<std::filesystem::path>& extensions)
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{
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return (std::find(std::cbegin(extensions), std::cend(extensions), file.extension()) != std::cend(extensions));
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}
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} // namespace
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namespace CoverArt {
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std::unique_ptr<IGrabber> createGrabber(const std::filesystem::path& execPath)
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{
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return std::make_unique<Grabber>(execPath);
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}
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Grabber::Grabber(const std::filesystem::path& execPath)
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{
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init(execPath);
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}
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Grabber::~Grabber()
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{
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deinit();
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}
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void
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Grabber::setDefaultCover(const std::filesystem::path& p)
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{
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if (!_defaultCover.load(p))
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throw LmsException("Cannot read default cover file '" + p.string() + "'");
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}
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Image
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Grabber::getDefaultCover(std::size_t size)
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{
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LMS_LOG(COVER, DEBUG) << "Getting a default cover using size = " << size;
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std::unique_lock<std::mutex> lock(_mutex);
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auto it = _defaultCovers.find(size);
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if (it == _defaultCovers.end())
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{
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Image cover = _defaultCover;
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LMS_LOG(COVER, DEBUG) << "default cover size = " << cover.getSize().width << " x " << cover.getSize().height;
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LMS_LOG(COVER, DEBUG) << "Scaling cover to size = " << size;
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cover.scale(Geometry{size, size});
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LMS_LOG(COVER, DEBUG) << "Scaling DONE";
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auto res = _defaultCovers.insert(std::make_pair(size, cover));
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assert(res.second);
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it = res.first;
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}
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return it->second;
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}
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static std::optional<Image>
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getFromAvMediaFile(const Av::MediaFile& input)
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{
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std::vector<Image> res;
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for (auto& picture : input.getAttachedPictures(2))
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{
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Image image;
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if (image.load(picture.data))
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return image;
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else
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LMS_LOG(COVER, ERROR) << "Cannot load embedded cover file in '" << input.getPath().string() << "'";
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}
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LMS_LOG(COVER, DEBUG) << "No cover found in media file '" << input.getPath().string() << "'";
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return std::nullopt;
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}
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std::optional<Image>
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Grabber::getFromDirectory(const std::filesystem::path& p) const
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{
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for (auto coverPath : getCoverPaths(p))
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{
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Image image;
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if (image.load(coverPath))
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return image;
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else
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LMS_LOG(COVER, ERROR) << "Cannot load image in file '" << coverPath.string() << "'";
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}
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LMS_LOG(COVER, DEBUG) << "No cover found in directory '" << p.string() << "'";
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return std::nullopt;
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}
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std::vector<std::filesystem::path>
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Grabber::getCoverPaths(const std::filesystem::path& directoryPath) const
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{
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std::vector<std::filesystem::path> res;
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std::error_code ec;
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// TODO handle preferred file names
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std::filesystem::directory_iterator itPath(directoryPath, ec);
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std::filesystem::directory_iterator itEnd;
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while (!ec && itPath != itEnd)
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{
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const std::filesystem::path path {*itPath};
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itPath.increment(ec);
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if (!std::filesystem::is_regular_file(path))
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continue;
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if (!isFileSupported(path, _fileExtensions))
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continue;
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if (std::filesystem::file_size(path) > _maxFileSize)
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{
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LMS_LOG(COVER, INFO) << "Cover file '" << path.string() << " is too big (" << std::filesystem::file_size(path) << "), limit is " << _maxFileSize;
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continue;
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}
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res.push_back(path);
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}
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return res;
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}
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std::optional<Image>
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Grabber::getFromTrack(const std::filesystem::path& p) const
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{
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try
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{
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Av::MediaFile input(p);
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return getFromAvMediaFile(input);
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}
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catch (Av::MediaFileException& e)
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{
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LMS_LOG(COVER, ERROR) << "Cannot get covers from track " << p.string() << ": " << e.what();
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return std::nullopt;
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}
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}
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Image
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Grabber::getFromTrack(Database::Session& dbSession, Database::IdType trackId, std::size_t size)
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{
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using namespace Database;
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std::optional<Image> cover;
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bool hasCover {};
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bool isMultiDisc {};
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std::filesystem::path trackPath;
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{
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auto transaction {dbSession.createSharedTransaction()};
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Track::pointer track = Track::getById(dbSession, trackId);
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if (track)
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{
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hasCover = track->hasCover();
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trackPath = track->getPath();
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auto release {track->getRelease()};
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if (release && release->getTotalDiscNumber() > 1)
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isMultiDisc = true;
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}
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}
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if (hasCover)
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cover = getFromTrack(trackPath);
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if (!cover)
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cover = getFromDirectory(trackPath.parent_path());
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if (!cover && isMultiDisc)
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{
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if (trackPath.parent_path().has_parent_path())
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cover = getFromDirectory(trackPath.parent_path().parent_path());
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}
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if (!cover)
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cover = getDefaultCover(size);
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else
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cover->scale(Geometry {size, size});
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return *cover;
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}
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Image
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Grabber::getFromRelease(Database::Session& session, Database::IdType releaseId, std::size_t size)
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{
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std::optional<Image> cover;
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std::optional<Database::IdType> trackId;
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{
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auto transaction {session.createSharedTransaction()};
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auto release {Database::Release::getById(session, releaseId)};
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if (release)
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{
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auto tracks {release->getTracks()};
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if (!tracks.empty())
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trackId = tracks.front().id();
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}
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}
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if (trackId)
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return getFromTrack(session, *trackId, size);
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if (!cover)
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cover = getDefaultCover(size);
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else
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cover->scale(Geometry {size, size});
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return *cover;
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}
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std::vector<uint8_t>
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Grabber::getFromTrack(Database::Session& session, Database::IdType trackId, Format format, std::size_t width)
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{
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const Image cover {getFromTrack(session, trackId, width)};
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assert(format == Format::JPEG);
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return cover.save(format);
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}
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std::vector<uint8_t>
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Grabber::getFromRelease(Database::Session& session, Database::IdType releaseId, Format format, std::size_t width)
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{
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const Image cover {getFromRelease(session, releaseId, width)};
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assert(format == Format::JPEG);
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return cover.save(format);
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}
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} // namespace CoverArt
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