1 files changed, 46 insertions, 0 deletions
diff --git a/source/blender/compositor/realtime_compositor/COM_input_single_value_operation.hh b/source/blender/compositor/realtime_compositor/COM_input_single_value_operation.hh
new file mode 100644
index 00000000000..bbcd336ee11
--- /dev/null
+++ b/source/blender/compositor/realtime_compositor/COM_input_single_value_operation.hh
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#pragma once
+
+#include "BLI_string_ref.hh"
+
+#include "NOD_derived_node_tree.hh"
+
+#include "COM_context.hh"
+#include "COM_operation.hh"
+#include "COM_result.hh"
+
+namespace blender::realtime_compositor {
+
+using namespace nodes::derived_node_tree_types;
+
+/* ------------------------------------------------------------------------------------------------
+ * Input Single Value Operation
+ *
+ * An input single value operation is an operation that outputs a single value result whose value
+ * is the value of an unlinked input socket. This is typically used to initialize the values of
+ * unlinked node input sockets. */
+class InputSingleValueOperation : public Operation {
+ private:
+  /* The identifier of the output. */
+  static const StringRef output_identifier_;
+  /* The input socket whose value will be computed as the operation's result. */
+  DInputSocket input_socket_;
+
+ public:
+  InputSingleValueOperation(Context &context, DInputSocket input_socket);
+
+  /* Allocate a single value result and set its value to the default value of the input socket. */
+  void execute() override;
+
+  /* Get a reference to the output result of the operation, this essentially calls the super
+   * get_result with the output identifier of the operation. */
+  Result &get_result();
+
+ private:
+  /* Populate the result of the operation, this essentially calls the super populate_result method
+   * with the output identifier of the operation. */
+  void populate_result(Result result);
+};
+
+}  // namespace blender::realtime_compositor