121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/*
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* Copyright (C) 2019 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 "SimilaritySearcher.hpp"
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#include "features/SimilarityFeaturesScannerAddon.hpp"
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#include "cluster/SimilarityClusterSearcher.hpp"
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#include "database/ScanSettings.hpp"
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#include "database/TrackList.hpp"
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namespace Similarity {
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Searcher::Searcher(FeaturesScannerAddon& somAddon)
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: _somAddon(somAddon)
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{}
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static
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Database::ScanSettings::SimilarityEngineType
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getEngineType(Database::Session& dbSession)
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{
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auto transaction {dbSession.createSharedTransaction()};
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return Database::ScanSettings::get(dbSession)->getSimilarityEngineType();
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}
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std::vector<Database::IdType>
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Searcher::getSimilarTracksFromTrackList(Database::Session& session, Database::IdType trackListId, std::size_t maxCount)
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{
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auto engineType {getEngineType(session)};
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auto somSearcher {_somAddon.getSearcher()};
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std::set<Database::IdType> trackIds;
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{
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auto transaction {session.createSharedTransaction()};
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Database::TrackList::pointer trackList {Database::TrackList::getById(session, trackListId)};
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if (trackList)
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{
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const std::vector<Database::IdType> orderedTrackIds {trackList->getTrackIds()};
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trackIds = std::set<Database::IdType> {std::cbegin(orderedTrackIds), std::cend(orderedTrackIds)};
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}
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}
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if (trackIds.empty())
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return {};
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if (engineType == Database::ScanSettings::SimilarityEngineType::Features
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&& somSearcher
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&& std::any_of(std::cbegin(trackIds), std::cend(trackIds), [&](Database::IdType trackId) { return somSearcher->isTrackClassified(trackId); } ))
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{
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return somSearcher->getSimilarTracks(trackIds, maxCount);
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}
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else
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return ClusterSearcher::getSimilarTracksFromTrackList(session, trackListId, maxCount);
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}
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std::vector<Database::IdType>
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Searcher::getSimilarTracks(Database::Session& dbSession, const std::set<Database::IdType>& trackIds, std::size_t maxCount)
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{
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auto engineType {getEngineType(dbSession)};
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auto somSearcher {_somAddon.getSearcher()};
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if (engineType == Database::ScanSettings::SimilarityEngineType::Features
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&& somSearcher
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&& std::any_of(std::cbegin(trackIds), std::cend(trackIds), [&](Database::IdType trackId) { return somSearcher->isTrackClassified(trackId); } ))
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{
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return somSearcher->getSimilarTracks(trackIds, maxCount);
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}
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else
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return ClusterSearcher::getSimilarTracks(dbSession, trackIds, maxCount);
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}
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std::vector<Database::IdType>
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Searcher::getSimilarReleases(Database::Session& dbSession, Database::IdType releaseId, std::size_t maxCount)
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{
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auto engineType {getEngineType(dbSession)};
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auto somSearcher {_somAddon.getSearcher()};
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if (engineType == Database::ScanSettings::SimilarityEngineType::Features
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&& somSearcher
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&& somSearcher->isReleaseClassified(releaseId))
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{
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return somSearcher->getSimilarReleases(releaseId, maxCount);
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}
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else
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return ClusterSearcher::getSimilarReleases(dbSession, releaseId, maxCount);
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}
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std::vector<Database::IdType>
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Searcher::getSimilarArtists(Database::Session& dbSession, Database::IdType artistId, std::size_t maxCount)
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{
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auto engineType {getEngineType(dbSession)};
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auto somSearcher {_somAddon.getSearcher()};
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if (engineType == Database::ScanSettings::SimilarityEngineType::Features
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&& somSearcher
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&& somSearcher->isArtistClassified(artistId))
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{
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return somSearcher->getSimilarArtists(artistId, maxCount);
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}
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else
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return ClusterSearcher::getSimilarArtists(dbSession, artistId, maxCount);
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}
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} // ns Similarity
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