135 lines
3.9 KiB
C++
135 lines
3.9 KiB
C++
/* This file is part of Clementine.
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Copyright 2010, David Sansome <me@davidsansome.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SONGLOADER_H
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#define SONGLOADER_H
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#include <memory>
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#include <gst/gst.h>
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#include <QObject>
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#include <QThreadPool>
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#include <QUrl>
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#include "song.h"
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#include "core/tagreaderclient.h"
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#include "musicbrainz/musicbrainzclient.h"
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class CueParser;
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class LibraryBackendInterface;
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class ParserBase;
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class Player;
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class PlaylistParser;
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class PodcastParser;
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class SongLoader : public QObject {
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Q_OBJECT
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public:
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SongLoader(LibraryBackendInterface* library, const Player* player,
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QObject* parent = nullptr);
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~SongLoader();
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enum Result { Success, Error, WillLoadAsync, };
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static const int kDefaultTimeout;
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const QUrl& url() const { return url_; }
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const SongList& songs() const { return songs_; }
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int timeout() const { return timeout_; }
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void set_timeout(int msec) { timeout_ = msec; }
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Result Load(const QUrl& url);
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// To effectively load the songs:
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// when we call Load() on a directory, it will return WillLoadAsync, load the
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// files with only filenames and emit LoadFinished(). When LoadFinished() is
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// received by songloaderinserter, it will insert songs (incompletely loaded)
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// in playlist, and call EffectiveSongsLoad() in a background thread to
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// perform the real load of the songs. Next, UpdateItems() will be called on
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// playlist and replace the partially-loaded items by the new ones, fully
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// loaded.
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void EffectiveSongsLoad();
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void EffectiveSongLoad(Song* song);
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Result LoadAudioCD();
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signals:
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void LoadFinished(bool success);
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private slots:
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void Timeout();
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void StopTypefind();
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void AudioCDTagsLoaded(const QString& artist, const QString& album,
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const MusicBrainzClient::ResultList& results);
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void LocalFileLoaded(TagReaderReply* reply);
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private:
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enum State { WaitingForType, WaitingForMagic, WaitingForData, Finished, };
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Result LoadLocal(const QString& filename);
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Result LoadLocalPartial(const QString& filename);
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void LoadLocalDirectory(const QString& filename);
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void LoadPlaylist(ParserBase* parser, const QString& filename);
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void LoadLocalDirectoryAndEmit(const QString& filename);
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void LoadPlaylistAndEmit(ParserBase* parser, const QString& filename);
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void AddAsRawStream();
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Result LoadRemote();
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// GStreamer callbacks
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static void TypeFound(GstElement* typefind, uint probability, GstCaps* caps,
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void* self);
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static gboolean DataReady(GstPad*, GstBuffer* buf, void* self);
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static GstBusSyncReply BusCallbackSync(GstBus*, GstMessage*, gpointer);
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static gboolean BusCallback(GstBus*, GstMessage*, gpointer);
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void StopTypefindAsync(bool success);
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void ErrorMessageReceived(GstMessage* msg);
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void EndOfStreamReached();
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void MagicReady();
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bool IsPipelinePlaying();
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private:
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static QSet<QString> sRawUriSchemes;
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QUrl url_;
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SongList songs_;
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QTimer* timeout_timer_;
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PlaylistParser* playlist_parser_;
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PodcastParser* podcast_parser_;
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CueParser* cue_parser_;
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// For async loads
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int timeout_;
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State state_;
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bool success_;
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ParserBase* parser_;
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QString mime_type_;
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bool is_podcast_;
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QByteArray buffer_;
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LibraryBackendInterface* library_;
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const Player* player_;
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std::shared_ptr<GstElement> pipeline_;
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QThreadPool thread_pool_;
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};
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#endif // SONGLOADER_H
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