mocked up a prototype of decoding data into the node graph

app/node/input.h

@@ -29,6 +29,7 @@
  */
 class NodeInput : public NodeParam
 {
+  Q_OBJECT
 public:
   NodeInput();
 
@@ -81,6 +82,13 @@ public:
    */
   QVariant get_value(const rational &time);
 
+  /**
+   * @brief Set the value at a given time
+   *
+   * This function will only work if there are no outputs connected.
+   */
+  void set_value(const rational& time, const QVariant& value);
+
   /**
    * @brief Return whether keyframing is enabled on this input or not
    */
@@ -96,6 +104,9 @@ public:
    */
   const QList<DataType>& inputs();
 
+signals:
+  void ValueChanged(const rational& start, const rational& end);
+
 private:
   /**
    * @brief Internal list of accepted data types