Add support to resolve variables on action queue add

plugins/midi/macro-action-midi.cpp

@@ -48,6 +48,21 @@ std::string MacroActionMidi::GetShortDesc() const
 	return _device.Name();
 }
 
+void MacroActionMidi::ResolveVariablesToFixedValues()
+{
+	_message.ResolveVariables();
+}
+
+std::shared_ptr<MacroAction> MacroActionMidi::Create(Macro *m)
+{
+	return std::make_shared<MacroActionMidi>(m);
+}
+
+std::shared_ptr<MacroAction> MacroActionMidi::Copy() const
+{
+	return std::make_shared<MacroActionMidi>(*this);
+}
+
 MacroActionMidiEdit::MacroActionMidiEdit(
 	QWidget *parent, std::shared_ptr<MacroActionMidi> entryData)
 	: QWidget(parent),

plugins/midi/macro-action-midi.hpp

@@ -15,11 +15,10 @@ public:
 	bool Save(obs_data_t *obj) const;
 	bool Load(obs_data_t *obj);
 	std::string GetShortDesc() const;
+	void ResolveVariablesToFixedValues();
 	std::string GetId() const { return id; };
-	static std::shared_ptr<MacroAction> Create(Macro *m)
-	{
-		return std::make_shared<MacroActionMidi>(m);
-	}
+	static std::shared_ptr<MacroAction> Create(Macro *m);
+	std::shared_ptr<MacroAction> Copy() const;
 
 	MidiDevice _device;
 	MidiMessage _message;

plugins/midi/midi-helpers.cpp

@@ -91,6 +91,13 @@ std::string MidiMessage::ToString() const
 	       " Value: " + std::to_string(_value);
 }
 
+void MidiMessage::ResolveVariables()
+{
+	_channel.ResolveVariables();
+	_note.ResolveVariables();
+	_value.ResolveVariables();
+}
+
 std::string MidiMessage::ToString(const libremidi::message &msg)
 {
 	return "Type: " + GetMidiType(msg) +

plugins/midi/midi-helpers.hpp

@@ -38,6 +38,8 @@ public:
 	int Note() const { return _note; }
 	int Value() const { return _value; }
 
+	void ResolveVariables();
+
 private:
 	// Values which don't appear for channel, note, and value will be used
 	// to indicate whether this part of the message is optional and can be