[net] Add parameter type information

src/ossia/audio/audio_parameter.cpp

@@ -12,6 +12,7 @@ namespace ossia
 audio_parameter::audio_parameter(net::node_base& n)
     : ossia::net::parameter_base{n}
 {
+  m_type = parameter_type::AUDIO;
 }
 
 void audio_parameter::clone_value(audio_vector& res_vec) const

src/ossia/audio/audio_parameter.hpp

@@ -16,7 +16,7 @@ class OSSIA_EXPORT audio_parameter : public ossia::net::parameter_base
   ossia::small_vector<tcb::span<float>, 8> audio;
   double m_gain{1.};
 
-  audio_parameter(ossia::net::node_base& n);
+  explicit audio_parameter(ossia::net::node_base& n);
 
   virtual ~audio_parameter();
 

src/ossia/dataflow/dataflow_fwd.hpp

@@ -57,8 +57,8 @@ struct midi_delay_line;
 struct value_delay_line;
 struct geometry_delay_line;
 
-using data_type
-    = ossia::nullable_variant<audio_port, midi_port, value_port, geometry_port>;
+// using data_type
+//     = ossia::nullable_variant<audio_port, midi_port, value_port, geometry_port>;
 using delay_line_type = ossia::nullable_variant<
     audio_delay_line, midi_delay_line, value_delay_line, geometry_delay_line>;
 }

src/ossia/gfx/texture_parameter.hpp

@@ -7,7 +7,12 @@ namespace ossia::gfx
 class OSSIA_EXPORT texture_parameter : public ossia::net::parameter_base
 {
 public:
-  using parameter_base::parameter_base;
+  explicit texture_parameter(ossia::net::node_base& n)
+      : parameter_base{n}
+  {
+    m_type = parameter_type::TEXTURE;
+  }
+
   virtual ~texture_parameter();
 
   void pull_value() override;

src/ossia/network/base/parameter.cpp

@@ -136,6 +136,11 @@ parameter_base& parameter_base::set_critical(bool v)
   return *this;
 }
 
+parameter_type parameter_base::get_type() const noexcept
+{
+  return m_type;
+}
+
 value_with_unit get_value(const ossia::destination& d)
 {
   ossia::net::parameter_base& addr = d.value.get();

src/ossia/network/base/parameter.hpp

@@ -173,13 +173,16 @@ class OSSIA_EXPORT parameter_base : public callback_container<value_callback>
   bool get_critical() const noexcept;
   parameter_base& set_critical(bool v);
 
+  parameter_type get_type() const noexcept;
+
 protected:
   ossia::net::node_base& m_node;
   unit_t m_unit;
   bool m_critical{};
   bool m_disabled{};
   bool m_muted{};
   ossia::repetition_filter m_repetitionFilter{ossia::repetition_filter::OFF};
+  parameter_type m_type{};
 };
 
 inline bool operator==(const parameter_base& lhs, const parameter_base& rhs)

src/ossia/network/common/parameter_properties.hpp

@@ -27,6 +27,18 @@ enum class val_type : int8_t
   NONE = std::numeric_limits<int8_t>::max()
 };
 
+/**
+ * @brief Possible types of parameters / ports
+ */
+enum class parameter_type : int8_t
+{
+  MESSAGE,
+  AUDIO,
+  MIDI,
+  TEXTURE,
+  GEOMETRY
+};
+
 /**
  * @brief Address behaviors at crossing domain boundaries time
  */