97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2018, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry 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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* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef LYRICSFETCHER_H
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#define LYRICSFETCHER_H
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#include "config.h"
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#include <QtGlobal>
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#include <QObject>
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#include <QMetaType>
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#include <QQueue>
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#include <QSet>
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#include <QList>
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#include <QHash>
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#include <QString>
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#include <QUrl>
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class QTimer;
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class LyricsProviders;
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class LyricsFetcherSearch;
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struct LyricsSearchRequest {
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explicit LyricsSearchRequest() : id(-1) {}
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quint64 id;
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QString artist;
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QString album;
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QString title;
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};
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struct LyricsSearchResult {
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explicit LyricsSearchResult() : score(0.0) {}
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QString provider;
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QString artist;
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QString album;
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QString title;
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QString lyrics;
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float score;
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};
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typedef QList<LyricsSearchResult> LyricsSearchResults;
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Q_DECLARE_METATYPE(LyricsSearchResult)
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Q_DECLARE_METATYPE(QList<LyricsSearchResult>)
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class LyricsFetcher : public QObject {
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Q_OBJECT
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public:
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explicit LyricsFetcher(LyricsProviders *lyrics_providers, QObject *parent = nullptr);
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virtual ~LyricsFetcher() {}
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quint64 Search(const QString &artist, const QString &album, const QString &title);
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void Clear();
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private:
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void AddRequest(const LyricsSearchRequest &req);
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signals:
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void LyricsFetched(const quint64 request_id, const QString &provider, const QString &lyrics);
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void SearchFinished(const quint64 request_id, const LyricsSearchResults &results);
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private slots:
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void SingleSearchFinished(const quint64 request_id, const LyricsSearchResults &results);
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void SingleLyricsFetched(const quint64 request_id, const QString &provider, const QString &lyrics);
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void StartRequests();
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private:
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static const int kMaxConcurrentRequests;
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LyricsProviders *lyrics_providers_;
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quint64 next_id_;
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QQueue<LyricsSearchRequest> queued_requests_;
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QHash<quint64, LyricsFetcherSearch*> active_requests_;
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QTimer *request_starter_;
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};
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#endif // LYRICSFETCHER_H
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