X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Factive_text.h;fp=src%2Flib%2Factive_text.h;h=1dab7a867540b38927bea08f29b315a1ca87866e;hb=c380909d3dcac0809dbeedc6240c33d37118296d;hp=10ce30f08476711a511f9d7ee53b09fb5c30d7e1;hpb=c252bea0407deedad31c67ab7dd5de4890cafd53;p=dcpomatic.git

diff --git a/src/lib/active_text.h b/src/lib/active_text.h
index 10ce30f08..1dab7a867 100644
--- a/src/lib/active_text.h
+++ b/src/lib/active_text.h
@@ -25,6 +25,7 @@
 #include "dcpomatic_time.h"
 #include "player_text.h"
 #include <boost/noncopyable.hpp>
+#include <boost/thread/mutex.hpp>
 #include <list>
 #include <map>
 
@@ -64,5 +65,6 @@ private:
 
 	void add (DCPTimePeriod period, std::list<PlayerText>& pc, std::list<Period> p) const;
 
+	mutable boost::mutex _mutex;
 	Map _data;
 };