1 files changed, 48 insertions, 0 deletions
diff --git a/libs/ardour/graphnode.cc b/libs/ardour/graphnode.cc
new file mode 100644
index 0000000000..c8f3e630d1
--- /dev/null
+++ b/libs/ardour/graphnode.cc
@@ -0,0 +1,48 @@
+
+#include "ardour/graph.h"
+#include "ardour/graphnode.h"
+#include "ardour/route.h"
+
+using namespace ARDOUR;
+
+// ========================================== GraphNode
+
+GraphNode::GraphNode( graph_ptr_t graph )
+  : _graph(graph)
+{ }
+
+void
+GraphNode::prep( int chain )
+{
+    _refcount = _init_refcount[chain];
+}
+
+void
+GraphNode::dec_ref()
+{
+    if (g_atomic_int_dec_and_test( &_refcount ))
+	_graph->trigger( this );
+}
+
+void
+GraphNode::finish( int chain )
+{
+    node_set_t::iterator i;
+    bool feeds_somebody = false;
+    for (i=_activation_set[chain].begin(); i!=_activation_set[chain].end(); i++)
+    {
+	(*i)->dec_ref();
+	feeds_somebody = true;
+    }
+    if (!feeds_somebody)
+    {
+	_graph->dec_ref();
+    }
+}
+
+
+void
+GraphNode::process()
+{
+    _graph->process_one_route( dynamic_cast<Route *>(this) );
+}