162 lines
4.5 KiB
C++
162 lines
4.5 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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* Copyright 2018-2021, 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 SONGLOADER_H
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#define SONGLOADER_H
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#include "config.h"
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#include <memory>
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#include <functional>
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#include <glib.h>
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#ifdef HAVE_GSTREAMER
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# include <gst/gst.h>
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#endif
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#include <QtGlobal>
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#include <QObject>
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#include <QThreadPool>
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#include <QByteArray>
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#include <QSet>
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#include <QString>
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#include <QStringList>
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#include <QUrl>
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#include "song.h"
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class QTimer;
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class Player;
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class CollectionBackendInterface;
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class PlaylistParser;
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class ParserBase;
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class CueParser;
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#if defined(HAVE_AUDIOCD) && defined(HAVE_GSTREAMER)
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class CddaSongLoader;
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#endif
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class SongLoader : public QObject {
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Q_OBJECT
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public:
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explicit SongLoader(CollectionBackendInterface *collection, const Player *player, QObject *parent = nullptr);
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~SongLoader() override;
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enum Result {
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Success,
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Error,
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BlockingLoadRequired,
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};
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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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// If Success is returned the songs are fully loaded. If BlockingLoadRequired is returned LoadFilenamesBlocking() needs to be called next.
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Result Load(const QUrl &url);
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// Loads the files with only filenames. When finished, songs() contains a complete list of all Song objects, but without metadata.
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// This method is blocking, do not call it from the UI thread.
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SongLoader::Result LoadFilenamesBlocking();
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// Completely load songs previously loaded with LoadFilenamesBlocking().
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// When finished, the Song objects in songs() contain metadata now. This method is blocking, do not call it from the UI thread.
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void LoadMetadataBlocking();
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Result LoadAudioCD();
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QStringList errors() { return errors_; }
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signals:
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void AudioCDTracksLoadFinished();
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void LoadAudioCDFinished(bool success);
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void LoadRemoteFinished();
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private slots:
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void Timeout();
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void StopTypefind();
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#if defined(HAVE_AUDIOCD) && defined(HAVE_GSTREAMER)
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void AudioCDTracksLoadFinishedSlot(const SongList &songs, const QString &error);
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void AudioCDTracksTagsLoaded(const SongList &songs);
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#endif // HAVE_AUDIOCD && HAVE_GSTREAMER
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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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SongLoader::Result LoadLocalAsync(const QString &filename);
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void EffectiveSongLoad(Song *song);
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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 AddAsRawStream();
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#ifdef HAVE_GSTREAMER
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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, void *self);
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static GstPadProbeReturn DataReady(GstPad*, GstPadProbeInfo *info, gpointer 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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#endif
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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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CueParser *cue_parser_;
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// For async loads
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std::function<Result()> preload_func_;
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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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QByteArray buffer_;
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CollectionBackendInterface *collection_;
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const Player *player_;
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#ifdef HAVE_GSTREAMER
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std::shared_ptr<GstElement> pipeline_;
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#endif
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QThreadPool thread_pool_;
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QStringList errors_;
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};
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#endif // SONGLOADER_H
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