changed to atomic and called mutex lock

src/playback_thread.cpp

@@ -152,8 +152,10 @@ void Playback::setVector(std::vector<FilterValue> v) {
 }
 
 void Playback::setFilterMapEx(std::unordered_map<std::string, FilterValue> f) {
+    mutex.lock();
     filter_map_ex_set = f;
     setFilterMap = true;
+    mutex.unlock();
 }
 
 unsigned long Playback::calcMem() {

src/playback_thread.h

@@ -57,7 +57,7 @@ private:
     std::atomic<int> fps_delay;
     std::vector<std::string> draw_strings;
     std::unordered_map<std::string, FilterValue> filter_map_ex;
-    bool setFilterMap = false;
+    std::atmoic<bool> setFilterMap;
     std::unordered_map<std::string, FilterValue> filter_map_ex_set;
 public:
     Playback(QObject *parent = 0);