Implement call ringing

src/libneochat/mediamanager.h

@@ -0,0 +1,64 @@
+// SPDX-FileCopyrightText: 2023 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: LGPL-2.0-or-later
+
+#pragma once
+
+#include <QObject>
+#include <QQmlEngine>
+#include <QTimer>
+
+class NeoChatRoom;
+class QAudioOutput;
+class QMediaPlayer;
+
+/**
+ * @class MediaManager
+ *
+ * Manages media playback, like voice/audio messages, videos, etc.
+ */
+class MediaManager : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+    QML_SINGLETON
+
+    Q_PROPERTY(bool isRinging READ isRinging NOTIFY isRingingChanged)
+
+public:
+    static MediaManager &instance()
+    {
+        static MediaManager _instance;
+        return _instance;
+    }
+    static MediaManager *create(QQmlEngine *, QJSEngine *)
+    {
+        QQmlEngine::setObjectOwnership(&instance(), QQmlEngine::CppOwnership);
+        return &instance();
+    }
+
+    /**
+     * @brief Notify other objects that media playback has started.
+     */
+    Q_INVOKABLE void startPlayback();
+
+    void ring(const QJsonObject &json, NeoChatRoom *room);
+    void stopRinging();
+
+    bool isRinging() const;
+
+Q_SIGNALS:
+    /**
+     * @brief Emitted when any media player starts playing. Other objects should stop / pause playback.
+     */
+    void playbackStarted();
+    void isRingingChanged();
+
+private:
+    MediaManager();
+
+    void ringUnchecked();
+    bool m_ringing = false;
+    QMediaPlayer *m_player;
+    QAudioOutput *m_output;
+    QTimer m_timer;
+};