+extern boost::filesystem::path subtitle_file (std::shared_ptr<Film> film);
+extern void make_random_file (boost::filesystem::path path, size_t size);
+
+class LogSwitcher
+{
+public:
+ LogSwitcher (std::shared_ptr<Log> log);
+ ~LogSwitcher ();
+
+private:
+ std::shared_ptr<Log> _old;
+};
+
+namespace dcp {
+
+std::ostream& operator<< (std::ostream& s, dcp::Size i);
+std::ostream& operator<< (std::ostream& s, Standard t);
+
+}