added lock

src/main_window.cpp

@@ -1431,14 +1431,14 @@ void AC_MainWindow::updateFrame(QImage img) {
         if(!recording) {
             frame_stream << "(Current/Total Frames/Seconds) - (" << frame_index << "/" << video_frames << "/" <<  (unsigned long)(frame_index/video_fps) << ") - ";
             
-            unsigned long mem = ac::calculateMemory();
+            unsigned long mem = playback->calcMem();
                 frame_stream << "Memory Allocated: " << ((mem > 0) ? (mem/1024/1024) : 0) << " MB - " << " Initalized: " << ac::all_objects.size() << " - Allocated: " << ac::getCurrentAllocatedFrames() << "\n";
                
         } else {
             struct stat buf;
             stat(video_file_name.toStdString().c_str(), &buf);
             frame_stream << "(Current/Total Frames/Seconds/Size) - (" << frame_index << "/" << video_frames << "/" <<  (unsigned int)(frame_index/video_fps) << "/" << ((buf.st_size/1000)/1000) <<  " MB) - ";
-            unsigned long mem = ac::calculateMemory();
+            unsigned long mem = playback->calcMem();
                 frame_stream << "Memory Allocated: " << ((mem > 0) ? (mem/1024/1024) : 0) << " MB - " << "Initalized: " << ac::all_objects.size() << " - Allocated: " << ac::getCurrentAllocatedFrames() << "\n";
         }
         if(programMode == MODE_VIDEO) {

src/playback_thread.cpp

@@ -119,6 +119,13 @@ void Playback::setVector(std::vector<FilterValue> v) {
     mutex_add.unlock();
 }
 
+unsigned long Playback::calcMem() {
+    mutex.lock();
+    unsigned long calc = ac::calculateMemory();
+    mutex.unlock();
+    return calc;
+}
+
 void Playback::setOptions(bool n, int c) {
     mutex.lock();
     ac::isNegative = n;

src/playback_thread.h

@@ -89,6 +89,7 @@ public:
     void setCycle(int type, int frame_skip, std::vector<std::string> &val);
     void setCycle(int type);
     void setPref(int thread_count, int intense);
+    unsigned long calcMem();
     void setCustomCycle(bool b);
     void setCustomCycleDelay(int delay);
 signals: