Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Lts/Services/AudioVideoManagement/AvsCommands/set_volume.h

@@ -0,0 +1,52 @@
+/**
+  * @RDE_HEADER@
+  * SetVolume
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Fröbel, NLSE, 2018-02-28
+  */
+
+#pragma once
+
+#include <AudioVideoManagement/icommand.h>
+#include <AudioVideoManagement/ava_types.h>
+
+namespace AudioVideoManagement
+{
+
+class IAvaComm;
+class IAvaCommandDoneObserver;
+
+namespace AvaCommands
+{
+
+/**
+ * @author Christian Fröbel
+ */
+class SetVolume final : public ICommand
+{
+  Q_OBJECT
+
+public:
+  SetVolume(IAvaComm *comm, IAvaCommandDoneObserver *doneObserver, AvaVolume db);
+
+  void send() override;
+  QString debug() const override { return QLatin1String("SetVolume"); }
+
+  bool nullifies(ICommand *other) const override;
+
+private slots:
+  void onOk();
+  void onVolumeReceived(AvaVolume db);
+
+private:
+  void done();
+
+  AvaVolume                  m_db;
+  bool                       m_ok{false};
+  IAvaComm                  *m_comm;
+  IAvaCommandDoneObserver   *m_observer;
+};
+
+}} // namespace AudioVideoManagement::AvaCommands