-extern wxString time_to_timecode (DCPTime t, double fps);
-
-extern void checked_set (wxFilePickerCtrl* widget, std::string value);
+extern wxString time_to_timecode (dcpomatic::DCPTime t, double fps);
+extern void setup_audio_channels_choice (wxChoice* choice, int minimum);
+extern wxSplashScreen* maybe_show_splash ();
+extern double calculate_mark_interval (double start);
+extern bool display_progress (wxString title, wxString task);
+extern bool report_errors_from_last_job (wxWindow* parent);
+
+extern void checked_set (FilePickerCtrl* widget, boost::filesystem::path value);
+extern void checked_set (wxDirPickerCtrl* widget, boost::filesystem::path value);