Merge branch 'ft9_refactor' into feat-refactor

# Conflicts:
#	CMakeLists.txt
#	lib/ft4/getcandidates4.f90
#	lib/ft4/sync4d.f90

Transceiver/EmulateSplitTransceiver.hpp

@@ -0,0 +1,53 @@
+#ifndef EMULATE_SPLIT_TRANSCEIVER_HPP__
+#define EMULATE_SPLIT_TRANSCEIVER_HPP__
+
+#include <memory>
+
+#include "Transceiver.hpp"
+
+//
+// Emulate Split Transceiver
+//
+// Helper decorator class that encapsulates  the emulation of split TX
+// operation.
+//
+// Responsibilities
+//
+//  Delegates  all  but setting  of  other  (split) frequency  to  the
+//  wrapped Transceiver instance. Also routes failure signals from the
+//  wrapped Transceiver instance to this instances failure signal.
+//
+//  Intercepts status  updates from  the wrapped  Transceiver instance
+//  and re-signals it with the emulated status.
+//
+//  Generates a status update signal if the other (split) frequency is
+//  changed, this is necessary  since the wrapped transceiver instance
+//  never receives other frequency changes.
+//
+class EmulateSplitTransceiver final
+  : public Transceiver
+{
+  Q_OBJECT
+
+public:
+  // takes ownership of wrapped Transceiver
+  explicit EmulateSplitTransceiver (std::unique_ptr<Transceiver> wrapped,
+                                    QObject * parent = nullptr);
+
+  void set (TransceiverState const&,
+            unsigned sequence_number) noexcept override;
+
+  // forward everything else to wrapped Transceiver
+  void start (unsigned sequence_number) noexcept override {wrapped_->start (sequence_number);}
+  void stop () noexcept override {wrapped_->stop ();}
+
+private:
+  void handle_update (TransceiverState const&, unsigned seqeunce_number);
+
+  std::unique_ptr<Transceiver> wrapped_;
+  Frequency rx_frequency_;        // requested Rx frequency
+  Frequency tx_frequency_;        // requested Tx frequency
+  bool split_; // requested split state
+};
+
+#endif