Allow signals to be blocked and resumed, and so make sure that a set

[dcpomatic.git] / src / lib / dcp_content.cc

diff --git a/src/lib/dcp_content.cc b/src/lib/dcp_content.cc
index 231a93bd0bec27c37574b785428ca792a185ffbb..cad775b24854b9c79aba7448570c11a70edd99ce 100644 (file)
--- a/src/lib/dcp_content.cc
+++ b/src/lib/dcp_content.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2014-2022 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2023 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -31,6 +31,7 @@
 #include "job.h"
 #include "log.h"
 #include "overlaps.h"
+#include "scope_guard.h"
 #include "text_content.h"
 #include "video_content.h"
 #include <dcp/dcp.h>
@@ -213,6 +214,11 @@ DCPContent::examine (shared_ptr<const Film> film, shared_ptr<Job> job)
        bool const needed_kdm = needs_kdm ();
        string const old_name = name ();
 
+       ContentChangeSignalDespatcher::instance()->suspend();
+       ScopeGuard sg = []() {
+               ContentChangeSignalDespatcher::instance()->resume();
+       };
+
        ContentChangeSignaller cc_texts (this, DCPContentProperty::TEXTS);
        ContentChangeSignaller cc_assets (this, DCPContentProperty::NEEDS_ASSETS);
        ContentChangeSignaller cc_kdm (this, DCPContentProperty::NEEDS_KDM);