Added Direct Play and websocket improvements

* [backend]: Websocket now automatically tries to reconnect if connection was lost, up to 3 times.
* [backend]: Move more playback and resume logic to the backend, to avoid having it in multiple places within the QML. Regression: pausing playback sometimes halts the video player for an unknown reason.
* [playback]: Sailfin will try to play without the server transcoding, if possible.
* [ui]: added a debug page in the settings

core/include/JellyfinQt/jellyfinapiclient.h

@@ -82,6 +82,7 @@ public:
     Q_PROPERTY(QString userId READ userId NOTIFY userIdChanged)
     Q_PROPERTY(QJsonObject deviceProfile READ deviceProfile NOTIFY deviceProfileChanged)
     Q_PROPERTY(QString version READ version)
+    Q_PROPERTY(WebSocket *websocket READ websocket NOTIFY websocketChanged)
 
     /*QNetworkReply *handleRequest(QString path, QStringList sort, Pagination *pagination,
                                  QVariantMap filters, QStringList fields, QStringList expand, QString id);*/
@@ -111,6 +112,7 @@ public:
     QJsonObject &deviceProfile() { return m_deviceProfile; }
     QJsonObject &playbackDeviceProfile() { return m_playbackDeviceProfile; }
     QString version() const;
+    WebSocket *websocket() const { return m_webSocket; }
 
     /**
      * @brief Sets the error handler of a reply to this classes default error handler
@@ -146,10 +148,8 @@ signals:
 
     void userIdChanged(QString userId);
 
-    void itemFetched(const QString &itemId, const QJsonObject &result);
-    void itemFetchFailed(const QString &itemId, const QNetworkReply::NetworkError error);
-
     void deviceProfileChanged();
+    void websocketChanged(WebSocket *newWebsocket);
 
     /**
      * @brief onUserDataChanged Emitted when the user data of an item is changed on the server.
@@ -179,8 +179,6 @@ public slots:
      */
     void deleteSession();
 
-    void fetchItem(const QString &id);
-
     /**
      * @brief Shares the capabilities of this device to the server.
      */

core/include/JellyfinQt/jellyfinitem.h

@@ -367,6 +367,7 @@ public:
     Q_PROPERTY(QJsonObject imageTags MEMBER m_imageTags NOTIFY imageTagsChanged)
     Q_PROPERTY(QStringList backdropImageTags MEMBER m_backdropImageTags NOTIFY backdropImageTagsChanged)
     Q_PROPERTY(QJsonObject imageBlurHashes MEMBER m_imageBlurHashes NOTIFY imageBlurHashesChanged)
+    Q_PROPERTY(QString mediaType MEMBER m_mediaType READ mediaType NOTIFY mediaTypeChanged)
     Q_PROPERTY(int width MEMBER m_width NOTIFY widthChanged)
     Q_PROPERTY(int height MEMBER m_height NOTIFY heightChanged)
 
@@ -406,6 +407,7 @@ public:
     void setRecursiveItemCount(int newRecursiveItemCount) { m_recursiveItemCount = newRecursiveItemCount; emit recursiveItemCountChanged(newRecursiveItemCount); }
     int childCount() const { return m_childCount.value_or(-1); }
     void setChildCount(int newChildCount) { m_childCount = newChildCount; emit childCountChanged(newChildCount); }
+    QString mediaType() const { return m_mediaType; }
 
     //QQmlListProperty<MediaStream> mediaStreams() { return toReadOnlyQmlListProperty<MediaStream>(m_mediaStreams); }
     //QList<QObject *> mediaStreams() { return *reinterpret_cast<QList<QObject *> *>(&m_mediaStreams); }
@@ -460,6 +462,7 @@ signals:
     void imageTagsChanged();
     void backdropImageTagsChanged();
     void imageBlurHashesChanged();
+    void mediaTypeChanged(const QString &newMediaType);
     void widthChanged(int newWidth);
     void heightChanged(int newHeight);
 
@@ -520,6 +523,7 @@ protected:
     QJsonObject m_imageTags;
     QStringList m_backdropImageTags;
     QJsonObject m_imageBlurHashes;
+    QString m_mediaType;
     int m_width;
     int m_height;
 

core/include/JellyfinQt/jellyfinplaybackmanager.h

@@ -65,6 +65,7 @@ public:
     Q_PROPERTY(int subtitleIndex MEMBER m_subtitleIndex NOTIFY subtitleIndexChanged)
     Q_PROPERTY(bool resumePlayback MEMBER m_resumePlayback NOTIFY resumePlaybackChanged)
     Q_PROPERTY(QObject* mediaPlayer READ mediaPlayer WRITE setMediaPlayer NOTIFY mediaPlayerChanged)
+    Q_PROPERTY(PlayMethod playMethod READ playMethod NOTIFY playMethodChanged)
 
     Item *item() const { return m_item; }
     void setItem(Item *newItem);
@@ -75,6 +76,7 @@ public:
     void setMediaPlayer(QObject *qmlMediaPlayer);
 
     QString streamUrl() const { return m_streamUrl; }
+    PlayMethod playMethod() const { return m_playMethod; }
 signals:
     void itemChanged(Item *newItemId);
     void streamUrlChanged(const QString &newStreamUrl);
@@ -83,6 +85,7 @@ signals:
     void subtitleIndexChanged(int subtitleIndex);
     void mediaPlayerChanged(QObject *newMediaPlayer);
     void resumePlaybackChanged(bool newResumePlayback);
+    void playMethodChanged(PlayMethod newPlayMethod);
 
 public slots:
     void updatePlaybackInfo();
@@ -103,7 +106,7 @@ private:
     qint64 m_oldPosition = 0;
     qint64 m_stopPosition = 0;
     QMediaPlayer::State m_oldState = QMediaPlayer::StoppedState;
-    PlayMethod m_playMethod;
+    PlayMethod m_playMethod = Transcode;
     QObject *m_qmlMediaPlayer = nullptr;
     QMediaPlayer * m_mediaPlayer = nullptr;
     bool m_resumePlayback = true;

core/include/JellyfinQt/jellyfinwebsocket.h

@@ -58,7 +58,12 @@ public:
         KeepAlive,
         UserDataChanged
     };
+    Q_PROPERTY(QAbstractSocket::SocketState state READ state NOTIFY stateChanged)
     Q_ENUM(MessageType)
+
+    QAbstractSocket::SocketState state() const {
+        return m_webSocket.state();
+    }
 public slots:
     void open();
 private slots:
@@ -67,14 +72,18 @@ private slots:
     void onDisconnected();
 
     void sendKeepAlive();
+    void onWebsocketStateChanged(QAbstractSocket::SocketState newState) { emit stateChanged(newState); }
 signals:
     void commandReceived(QString arts, QVariantMap args);
+    void stateChanged(QAbstractSocket::SocketState newState);
 
 protected:
     ApiClient *m_apiClient;
     QWebSocket m_webSocket;
 
     QTimer m_keepAliveTimer;
+    QTimer m_retryTimer;
+    int m_reconnectAttempt = 0;
 
 
     void setupKeepAlive(int data);