added plural forms to translatable strings

Fixes #1421

app/render/colormanager.h

@@ -22,6 +22,7 @@
 #define COLORSERVICE_H
 
 #include <memory>
+#include <QMutex>
 
 #include "codec/frame.h"
 #include "colorprocessor.h"
@@ -91,6 +92,11 @@ public:
 
   };
 
+  QMutex* mutex()
+  {
+    return &mutex_;
+  }
+
 signals:
   void ConfigChanged();
 
@@ -109,6 +115,8 @@ private:
 
   QString reference_space_;
 
+  QMutex mutex_;
+
   static OCIO::ConstConfigRcPtr default_config_;
 
 };

app/render/colorprocessor.cpp

@@ -28,6 +28,8 @@ namespace olive {
 
 ColorProcessor::ColorProcessor(ColorManager *config, const QString &input, const ColorTransform &transform)
 {
+  QMutexLocker locker(config->mutex());
+
   const QString& output = (transform.output().isEmpty()) ? config->GetDefaultDisplay() : transform.output();
 
   if (transform.is_display()) {