mirror of
https://github.com/HenkKalkwater/harbour-sailfin.git
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252 lines
9.3 KiB
C++
252 lines
9.3 KiB
C++
/*
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* Sailfin: a Jellyfin client written using Qt
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* Copyright (C) 2021 Chris Josten and the Sailfin Contributors.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef JELLYFIN_VIEWMODEL_PLAYBACKMANAGER_H
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#define JELLYFIN_VIEWMODEL_PLAYBACKMANAGER_H
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#include <QAbstractItemModel>
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#include <QJsonArray>
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#include <QJsonObject>
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#include <QFuture>
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#include <QObject>
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#include <QtGlobal>
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#include <QUrlQuery>
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#include <QVariant>
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#include <QtMultimedia/QMediaPlayer>
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#include <QtMultimedia/QMediaPlaylist>
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#include <functional>
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#include "../dto/baseitemdto.h"
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#include "../support/jsonconv.h"
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#include "../viewmodel/item.h"
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#include "../apiclient.h"
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#include "itemmodel.h"
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namespace Jellyfin {
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// Forward declaration of Jellyfin::ApiClient found in jellyfinapiclient.h
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class ApiClient;
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class ItemModel;
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class RemoteItem;
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namespace ViewModel {
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/**
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* @brief The PlaybackManager class manages the playback of Jellyfin items. It fetches streams based on Jellyfin items, posts
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* the current playback state to the Jellyfin Server, contains the actual media player and so on.
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*
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* The PlaybackManager actually keeps two mediaPlayers, m_mediaPlayer1 and m_mediaPlayer2. When one is playing, the other is
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* preloading the next item in the queue. The current media player is pointed to by m_mediaPlayer.
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*/
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class PlaybackManager : public QObject, public QQmlParserStatus {
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Q_OBJECT
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Q_INTERFACES(QQmlParserStatus)
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public:
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enum PlayMethod {
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Transcode,
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Stream,
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DirectPlay
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};
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Q_ENUM(PlayMethod)
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using FetchCallback = std::function<void(QUrl &&, PlayMethod)>;
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explicit PlaybackManager(QObject *parent = nullptr);
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Q_PROPERTY(ApiClient *apiClient MEMBER m_apiClient WRITE setApiClient)
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Q_PROPERTY(QString streamUrl READ streamUrl NOTIFY streamUrlChanged)
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Q_PROPERTY(bool autoOpen MEMBER m_autoOpen NOTIFY autoOpenChanged)
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Q_PROPERTY(int audioIndex MEMBER m_audioIndex NOTIFY audioIndexChanged)
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Q_PROPERTY(int subtitleIndex MEMBER m_subtitleIndex NOTIFY subtitleIndexChanged)
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Q_PROPERTY(bool resumePlayback MEMBER m_resumePlayback NOTIFY resumePlaybackChanged)
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Q_PROPERTY(PlayMethod playMethod READ playMethod NOTIFY playMethodChanged)
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// Current Item and queue informatoion
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Q_PROPERTY(ViewModel::Item *item READ item NOTIFY itemChanged)
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Q_PROPERTY(QAbstractItemModel *queue READ queue NOTIFY queueChanged)
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Q_PROPERTY(int queueIndex READ queueIndex NOTIFY queueIndexChanged)
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// Current media player related property getters
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Q_PROPERTY(qint64 duration READ duration NOTIFY durationChanged)
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Q_PROPERTY(QMediaPlayer::Error error READ error NOTIFY errorChanged)
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Q_PROPERTY(QString errorString READ errorString NOTIFY errorStringChanged)
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Q_PROPERTY(bool hasVideo READ hasVideo NOTIFY hasVideoChanged)
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Q_PROPERTY(QObject* mediaObject READ mediaObject NOTIFY mediaObjectChanged)
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Q_PROPERTY(QMediaPlayer::MediaStatus mediaStatus READ mediaStatus NOTIFY mediaStatusChanged)
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Q_PROPERTY(QMediaPlayer::State playbackState READ playbackState NOTIFY playbackStateChanged)
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Q_PROPERTY(qint64 position READ position NOTIFY positionChanged)
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ViewModel::Item *item() const { return m_displayItem; }
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void setApiClient(ApiClient *apiClient);
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QString streamUrl() const { return m_streamUrl; }
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PlayMethod playMethod() const { return m_playMethod; }
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QObject *mediaObject() const { return m_mediaPlayer; }
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qint64 position() const { return m_mediaPlayer->position(); }
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qint64 duration() const { return m_mediaPlayer->duration(); }
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ItemModel *queue() const { return m_queue; }
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int queueIndex() const { return m_queueIndex; }
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// Current media player related property getters
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QMediaPlayer::State playbackState() const { return m_playbackState; }
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QMediaPlayer::MediaStatus mediaStatus() const { return m_mediaPlayer->mediaStatus(); }
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bool hasVideo() const { return m_mediaPlayer->isVideoAvailable(); }
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QMediaPlayer::Error error () const { return m_mediaPlayer->error(); }
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QString errorString() const { return m_mediaPlayer->errorString(); }
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signals:
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void itemChanged(BaseItemDto *newItemId);
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void streamUrlChanged(const QString &newStreamUrl);
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void autoOpenChanged(bool autoOpen);
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void audioIndexChanged(int audioIndex);
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void subtitleIndexChanged(int subtitleIndex);
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void mediaPlayerChanged(QObject *newMediaPlayer);
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void resumePlaybackChanged(bool newResumePlayback);
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void playMethodChanged(PlayMethod newPlayMethod);
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// Current media player related property signals
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void mediaObjectChanged(QObject *newMediaObject);
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void positionChanged(qint64 newPosition);
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void durationChanged(qint64 newDuration);
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void queueChanged(ItemModel *newQue);
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void queueIndexChanged(int newIndex);
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void playbackStateChanged(QMediaPlayer::State newState);
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void mediaStatusChanged(QMediaPlayer::MediaStatus newMediaStatus);
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void hasVideoChanged(bool newHasVideo);
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void errorChanged(QMediaPlayer::Error newError);
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void errorStringChanged(const QString &newErrorString);
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public slots:
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/**
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* @brief playItem Replaces the current queue and plays the item with the given id.
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*
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* This will construct the Jellyfin::Item internally
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* and delete it later.
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* @param itemId The id of the item to play.
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*/
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void playItem(const QString &itemId);
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void playItemInList(ItemModel *itemList, int index);
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void play() { m_mediaPlayer->play(); }
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void pause() { m_mediaPlayer->pause(); }
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void seek(qint64 pos) { m_mediaPlayer->setPosition(pos); }
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void stop() { m_mediaPlayer->stop(); }
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/**
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* @brief previous Play the previous track in the current playlist.
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*/
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void previous();
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/**
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* @brief next Play the next track in the current playlist.
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*/
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void next();
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private slots:
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void mediaPlayerStateChanged(QMediaPlayer::State newState);
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void mediaPlayerPositionChanged(qint64 position);
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void mediaPlayerMediaStatusChanged(QMediaPlayer::MediaStatus newStatus);
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void mediaPlayerError(QMediaPlayer::Error error);
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/**
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* @brief updatePlaybackInfo Updates the Jellyfin server with the current playback progress etc.
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*/
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void updatePlaybackInfo();
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private:
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/// Factor to multiply with when converting from milliseconds to ticks.
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const static int MS_TICK_FACTOR = 10000;
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enum PlaybackInfoType { Started, Stopped, Progress };
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QTimer m_updateTimer;
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ApiClient *m_apiClient = nullptr;
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QSharedPointer<Model::Item> m_item;
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ViewModel::Item *m_displayItem = new ViewModel::Item(this);
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// Properties for making the streaming request.
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QString m_streamUrl;
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QString m_playSessionId;
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/// The index of the mediastreams of the to-be-played item containing the audio
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int m_audioIndex = 0;
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/// The index of the mediastreams of the to-be-played item containing subtitles
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int m_subtitleIndex = -1;
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/// The position in ticks to resume playback from
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qint64 m_resumePosition = 0;
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/// The position in ticks the playback was stopped
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qint64 m_stopPosition = 0;
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/// Keeps track of latest playback position
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qint64 m_oldPosition = 0;
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/**
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* @brief Whether to automatically open the livestream of the item;
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*/
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bool m_autoOpen = false;
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// Playback-related members
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QMediaPlayer::State m_oldState = QMediaPlayer::StoppedState;
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PlayMethod m_playMethod = Transcode;
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QMediaPlayer::State m_playbackState = QMediaPlayer::StoppedState;
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/// Pointer to the current media player.
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QMediaPlayer *m_mediaPlayer = nullptr;
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// There are 2 media players over here, so one is able to preload the next song
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// before the other starts playing
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/// Media player 1
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QMediaPlayer *m_mediaPlayer1;
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/// Media player 2
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QMediaPlayer *m_mediaPlayer2;
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ItemModel *m_queue = nullptr;
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int m_queueIndex = 0;
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bool m_resumePlayback = true;
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// Helper methods
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void setItem(ViewModel::Item *newItem);
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void swapMediaPlayer();
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/**
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* @brief Retrieves the URL of the stream to open.
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*/
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void fetchStreamUrl(const Model::Item *item, bool autoOpen, const FetchCallback &callback);
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void fetchAndSetStreamUrl(const Model::Item *item);
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void setStreamUrl(const QString &streamUrl);
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void setPlaybackState(QMediaPlayer::State newState);
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Model::Item *nextItem();
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void setQueue(ItemModel *itemModel);
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/**
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* @brief Posts the playback information
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*/
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void postPlaybackInfo(PlaybackInfoType type);
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// QQmlParserListener interface
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void classBegin() override { m_qmlIsParsingComponent = true; }
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void componentComplete() override;
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bool m_qmlIsParsingComponent = false;
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};
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} // NS ViewModel
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} // NS Jellyfin
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#endif // JELLYFIN_VIEWMODEL_PLAYBACKMANAGER_H
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