variable plugin port config.

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

diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 51fc33a39509cb97bb83c0295d8163876bc637fc..7ef2a62a24b4e00dcbba86a92f3bfb818ebd04f6 100644 (file)
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -2505,6 +2505,45 @@ Route::add_remove_sidechain (boost::shared_ptr<Processor> proc, bool add)
        return true;
 }
 
+bool
+Route::plugin_preset_output (boost::shared_ptr<Processor> proc, ChanCount outs)
+{
+       boost::shared_ptr<PluginInsert> pi;
+       if ((pi = boost::dynamic_pointer_cast<PluginInsert>(proc)) == 0) {
+               return false;
+       }
+
+       {
+               Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
+               ProcessorList::iterator i = find (_processors.begin(), _processors.end(), proc);
+               if (i == _processors.end ()) {
+                       return false;
+               }
+       }
+
+       {
+               Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
+               Glib::Threads::RWLock::WriterLock lm (_processor_lock);
+
+               const ChanCount& old (pi->preset_out ());
+               if (!pi->set_preset_out (outs)) {
+                       return true; // no change, OK
+               }
+
+               list<pair<ChanCount, ChanCount> > c = try_configure_processors_unlocked (n_inputs (), 0);
+               if (c.empty()) {
+                       /* not possible */
+                       pi->set_preset_out (old);
+                       return false;
+               }
+               configure_processors_unlocked (0);
+       }
+
+       processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
+       _session.set_dirty ();
+       return true;
+}
+
 bool
 Route::reset_plugin_insert (boost::shared_ptr<Processor> proc)
 {