From e74ff1e92aa262f80c86b92ae9edc896dc32e319 Mon Sep 17 00:00:00 2001
From: Hanspeter Portner <dev@open-music-kontrollers.ch>
Date: Thu, 17 Mar 2016 23:01:33 +0100
Subject: [PATCH] Fix blocked patch:Set messages.

---
 libs/ardour/lv2_plugin.cc | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index 3b9a3ef..d707d3e 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -2464,19 +2464,18 @@ LV2Plugin::connect_and_run(BufferSet& bufs,
 							                    _uri_map.urids.patch_value,    &value,
 							                    0);
 
-							if (!property || !value ||
-							    property->type != _uri_map.urids.atom_URID ||
-							    value->type    != _uri_map.urids.atom_Path) {
+							if (property && value &&
+							    property->type == _uri_map.urids.atom_URID &&
+							    value->type    == _uri_map.urids.atom_Path) {
+								const uint32_t prop_id = ((const LV2_Atom_URID*)property)->body;
+								const char*    path    = (const char*)LV2_ATOM_BODY_CONST(value);
+
+								// Emit PropertyChanged signal for UI
+								// TODO: This should emit the control's Changed signal
+								PropertyChanged(prop_id, Variant(Variant::PATH, path));
+							} else {
 								std::cerr << "warning: patch:Set for unknown property" << std::endl;
-								continue;
 							}
-
-							const uint32_t prop_id = ((const LV2_Atom_URID*)property)->body;
-							const char*    path    = (const char*)LV2_ATOM_BODY_CONST(value);
-
-							// Emit PropertyChanged signal for UI
-							// TODO: This should emit the control's Changed signal
-							PropertyChanged(prop_id, Variant(Variant::PATH, path));
 						}
 					}
 				}
-- 
2.7.3