prepare plugin configuration and replacing instruments

[ardour.git] / libs / ardour / plugin_insert.cc

diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc
index f6f620e88350cc583ac983da610ab57d1cdecdcf..a72412a86875fbc99d99520249287265802b2da1 100644 (file)
--- a/libs/ardour/plugin_insert.cc
+++ b/libs/ardour/plugin_insert.cc
@@ -1192,6 +1192,20 @@ PluginInsert::set_thru_map (ChanMapping m) {
        }
 }
 
+bool
+PluginInsert::pre_seed (const ChanCount& in, const ChanCount& out,
+               const ChanMapping& im, const ChanMapping& om, const ChanMapping& tm)
+{
+       if (_configured) { return false; }
+       _configured_in = in;
+       _configured_out = out;
+       _in_map[0] = im;
+       _out_map[0] = om;
+       _thru_map = tm;
+       _maps_from_state = in.n_total () > 0 && out.n_total () > 0;
+       return true;
+}
+
 ChanMapping
 PluginInsert::input_map () const
 {