Add support for scripted meta-templates.
[ardour.git] / gtk2_ardour / ardour_ui.cc
index 5e2af4bbb4449a80b99ae0d3bceb7a4508772111..0748d418c269a17aea0ad7253ea5c957815e21cb 100644 (file)
 #include <glib.h>
 #include "pbd/gstdio_compat.h"
 
-#include <gtkmm/messagedialog.h>
 #include <gtkmm/accelmap.h>
+#include <gtkmm/messagedialog.h>
 #include <gtkmm/stock.h>
+#include <gtkmm/uimanager.h>
 
 #include "pbd/error.h"
 #include "pbd/basename.h"
 #include "pbd/memento_command.h"
 #include "pbd/openuri.h"
 #include "pbd/stl_delete.h"
+#include "pbd/types_convert.h"
+#include "pbd/unwind.h"
 #include "pbd/file_utils.h"
 #include "pbd/localtime_r.h"
 #include "pbd/pthread_utils.h"
 #include "pbd/replace_all.h"
+#include "pbd/scoped_file_descriptor.h"
 #include "pbd/xml++.h"
 
 #include "gtkmm2ext/application.h"
 #include "gtkmm2ext/bindings.h"
 #include "gtkmm2ext/gtk_ui.h"
 #include "gtkmm2ext/utils.h"
-#include "gtkmm2ext/click_box.h"
-#include "gtkmm2ext/fastmeter.h"
-#include "gtkmm2ext/popup.h"
 #include "gtkmm2ext/window_title.h"
 
+#include "widgets/fastmeter.h"
+#include "widgets/prompter.h"
+
 #include "ardour/ardour.h"
 #include "ardour/audio_backend.h"
 #include "ardour/audio_track.h"
@@ -93,6 +97,7 @@
 #include "ardour/profile.h"
 #include "ardour/recent_sessions.h"
 #include "ardour/record_enable_control.h"
+#include "ardour/revision.h"
 #include "ardour/session_directory.h"
 #include "ardour/session_route.h"
 #include "ardour/session_state_utils.h"
@@ -124,6 +129,7 @@ typedef uint64_t microseconds_t;
 
 #include "about.h"
 #include "editing.h"
+#include "enums_convert.h"
 #include "actions.h"
 #include "add_route_dialog.h"
 #include "ambiguous_file_dialog.h"
@@ -141,6 +147,7 @@ typedef uint64_t microseconds_t;
 #include "global_port_matrix.h"
 #include "gui_object.h"
 #include "gui_thread.h"
+#include "idleometer.h"
 #include "keyboard.h"
 #include "keyeditor.h"
 #include "location_ui.h"
@@ -151,12 +158,12 @@ typedef uint64_t microseconds_t;
 #include "missing_plugin_dialog.h"
 #include "mixer_ui.h"
 #include "meterbridge.h"
+#include "meter_patterns.h"
 #include "mouse_cursors.h"
 #include "nsm.h"
 #include "opts.h"
 #include "pingback.h"
 #include "processor_box.h"
-#include "prompter.h"
 #include "public_editor.h"
 #include "rc_option_editor.h"
 #include "route_time_axis.h"
@@ -170,11 +177,12 @@ typedef uint64_t microseconds_t;
 #include "speaker_dialog.h"
 #include "splash.h"
 #include "startup.h"
-#include "theme_manager.h"
+#include "template_dialog.h"
 #include "time_axis_view_item.h"
 #include "time_info_box.h"
 #include "timers.h"
 #include "utils.h"
+#include "utils_videotl.h"
 #include "video_server_dialog.h"
 #include "add_video_dialog.h"
 #include "transcode_video_dialog.h"
@@ -185,6 +193,7 @@ using namespace ARDOUR;
 using namespace ARDOUR_UI_UTILS;
 using namespace PBD;
 using namespace Gtkmm2ext;
+using namespace ArdourWidgets;
 using namespace Gtk;
 using namespace std;
 using namespace Editing;
@@ -192,7 +201,7 @@ using namespace Editing;
 ARDOUR_UI *ARDOUR_UI::theArdourUI = 0;
 
 sigc::signal<void, framepos_t, bool, framepos_t> ARDOUR_UI::Clock;
-sigc::signal<void>      ARDOUR_UI::CloseAllDialogs;
+sigc::signal<void> ARDOUR_UI::CloseAllDialogs;
 
 static bool
 ask_about_configuration_copy (string const & old_dir, string const & new_dir, int version)
@@ -205,7 +214,7 @@ ask_about_configuration_copy (string const & old_dir, string const & new_dir, in
                           Gtk::MESSAGE_INFO,
                           Gtk::BUTTONS_YES_NO,
                           true /* modal, though it hardly matters since it is the only window */
-               );
+       );
 
        msg.set_default_response (Gtk::RESPONSE_YES);
        msg.show_all ();
@@ -215,8 +224,8 @@ ask_about_configuration_copy (string const & old_dir, string const & new_dir, in
 
 static void
 libxml_generic_error_func (void* /* parsing_context*/,
-                   const char* msg,
-                   ...)
+                           const char* msg,
+                           ...)
 {
        va_list ap;
        char buf[2048];
@@ -257,6 +266,7 @@ libxml_structured_error_func (void* /* parsing_context*/,
 ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
        : Gtkmm2ext::UI (PROGRAM_NAME, X_("gui"), argcp, argvp)
        , session_loaded (false)
+       , session_load_in_progress (false)
        , gui_object_state (new GUIObjectState)
        , primary_clock   (new MainClock (X_("primary"),   X_("transport"), true ))
        , secondary_clock (new MainClock (X_("secondary"), X_("secondary"), false))
@@ -280,16 +290,17 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
        , auto_loop_controllable (new TransportControllable ("transport auto loop", *this, TransportControllable::AutoLoop))
        , play_selection_controllable (new TransportControllable ("transport play selection", *this, TransportControllable::PlaySelection))
        , rec_controllable (new TransportControllable ("transport rec-enable", *this, TransportControllable::RecordEnable))
+       , auto_input_button (ArdourButton::led_default_elements)
        , time_info_box (0)
        , auto_return_button (ArdourButton::led_default_elements)
        , follow_edits_button (ArdourButton::led_default_elements)
-       , auto_input_button (ArdourButton::led_default_elements)
        , auditioning_alert_button (_("Audition"))
        , solo_alert_button (_("Solo"))
        , feedback_alert_button (_("Feedback"))
        , error_alert_button ( ArdourButton::just_led_default_elements )
-       , editor_meter(0)
        , editor_meter_peak_display()
+       , editor_meter(0)
+       , _suspend_editor_meter_callbacks (false)
        , _numpad_locate_happening (false)
        , _session_is_new (false)
        , last_key_press_time (0)
@@ -305,13 +316,14 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
        , audio_midi_setup (X_("audio-midi-setup"), _("Audio/MIDI Setup"))
        , export_video_dialog (X_("video-export"), _("Video Export Dialog"))
        , lua_script_window (X_("script-manager"), _("Script Manager"))
+       , idleometer (X_("idle-o-meter"), _("Idle'o'Meter"))
        , session_option_editor (X_("session-options-editor"), _("Properties"), boost::bind (&ARDOUR_UI::create_session_option_editor, this))
        , add_video_dialog (X_("add-video"), _("Add Video"), boost::bind (&ARDOUR_UI::create_add_video_dialog, this))
        , bundle_manager (X_("bundle-manager"), _("Bundle Manager"), boost::bind (&ARDOUR_UI::create_bundle_manager, this))
        , big_clock_window (X_("big-clock"), _("Big Clock"), boost::bind (&ARDOUR_UI::create_big_clock_window, this))
        , audio_port_matrix (X_("audio-connection-manager"), _("Audio Connections"), boost::bind (&ARDOUR_UI::create_global_port_matrix, this, ARDOUR::DataType::AUDIO))
        , midi_port_matrix (X_("midi-connection-manager"), _("MIDI Connections"), boost::bind (&ARDOUR_UI::create_global_port_matrix, this, ARDOUR::DataType::MIDI))
-       , key_editor (X_("key-editor"), _("Bindings Editor"), boost::bind (&ARDOUR_UI::create_key_editor, this))
+       , key_editor (X_("key-editor"), _("Keyboard Shortcuts"), boost::bind (&ARDOUR_UI::create_key_editor, this))
        , video_server_process (0)
        , splash (0)
        , have_configure_timeout (false)
@@ -331,6 +343,10 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
        UIConfiguration::instance().post_gui_init ();
 
        if (ARDOUR::handle_old_configuration_files (boost::bind (ask_about_configuration_copy, _1, _2, _3))) {
+               {
+                       /* "touch" the been-here-before path now that config has been migrated */
+                       PBD::ScopedFileDescriptor fout (g_open (been_here_before_path ().c_str(), O_CREAT|O_TRUNC|O_RDWR, 0666));
+               }
                MessageDialog msg (string_compose (_("Your configuration files were copied. You can now restart %1."), PROGRAM_NAME), true);
                msg.run ();
                /* configuration was modified, exit immediately */
@@ -449,7 +465,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 
        TimeAxisViewItem::set_constant_heights ();
 
-        /* Set this up so that our window proxies can register actions */
+       /* Set this up so that our window proxies can register actions */
 
        ActionManager::init ();
 
@@ -472,6 +488,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
                midi_port_matrix.set_state (*ui_xml, 0);
                export_video_dialog.set_state (*ui_xml, 0);
                lua_script_window.set_state (*ui_xml, 0);
+               idleometer.set_state (*ui_xml, 0);
        }
 
        /* Separate windows */
@@ -491,6 +508,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
        WM::Manager::instance().register_window (&big_clock_window);
        WM::Manager::instance().register_window (&audio_port_matrix);
        WM::Manager::instance().register_window (&midi_port_matrix);
+       WM::Manager::instance().register_window (&idleometer);
 
        /* do not retain position for add route dialog */
        add_route_dialog.set_state_mask (WindowProxy::Size);
@@ -513,8 +531,8 @@ ARDOUR_UI::pre_release_dialog ()
        ArdourDialog d (_("Pre-Release Warning"), true, false);
        d.add_button (Gtk::Stock::OK, Gtk::RESPONSE_OK);
 
-        Label* label = manage (new Label);
-        label->set_markup (string_compose (_("<b>Welcome to this pre-release build of %1 %2</b>\n\n\
+       Label* label = manage (new Label);
+       label->set_markup (string_compose (_("<b>Welcome to this pre-release build of %1 %2</b>\n\n\
 There are still several issues and bugs to be worked on,\n\
 as well as general workflow improvements, before this can be considered\n\
 release software. So, a few guidelines:\n\
@@ -534,11 +552,11 @@ Full information on all the above can be found on the support page at\n\
                 http://ardour.org/support\n\
 "), PROGRAM_NAME, VERSIONSTRING));
 
-        d.get_vbox()->set_border_width (12);
-        d.get_vbox()->pack_start (*label, false, false, 12);
-        d.get_vbox()->show_all ();
+       d.get_vbox()->set_border_width (12);
+       d.get_vbox()->pack_start (*label, false, false, 12);
+       d.get_vbox()->show_all ();
 
-        d.run ();
+       d.run ();
 }
 
 GlobalPortMatrixWindow*
@@ -674,6 +692,55 @@ ARDOUR_UI::post_engine ()
         */
 
        if (ARDOUR_COMMAND_LINE::show_key_actions) {
+               stringstream sstr;
+               Bindings::save_all_bindings_as_html (sstr);
+
+               if (sstr.str().empty()) {
+                       return;
+               }
+               gchar* file_name;
+               GError *err = NULL;
+               gint fd;
+
+               if ((fd = g_file_open_tmp ("akprintXXXXXX.html", &file_name, &err)) < 0) {
+                       if (err) {
+                               error << string_compose (_("Could not open temporary file to print bindings (%1)"), err->message) << endmsg;
+                               g_error_free (err);
+                       }
+                       return;
+               }
+
+#ifdef PLATFORM_WINDOWS
+               ::close (fd);
+#endif
+
+               err = NULL;
+
+               if (!g_file_set_contents (file_name, sstr.str().c_str(), sstr.str().size(), &err)) {
+#ifndef PLATFORM_WINDOWS
+                       ::close (fd);
+#endif
+                       g_unlink (file_name);
+                       if (err) {
+                               error << string_compose (_("Could not save bindings to file (%1)"), err->message) << endmsg;
+                               g_error_free (err);
+                       }
+                       return;
+               }
+
+#ifndef PLATFORM_WINDOWS
+               ::close (fd);
+#endif
+
+               PBD::open_uri (string_compose ("file:///%1", file_name));
+
+               halt_connection.disconnect ();
+               AudioEngine::instance()->stop ();
+               exit (0);
+
+       }
+
+       if (ARDOUR_COMMAND_LINE::show_actions) {
 
 
                vector<string> paths;
@@ -681,21 +748,70 @@ ARDOUR_UI::post_engine ()
                vector<string> tooltips;
                vector<string> keys;
                vector<Glib::RefPtr<Gtk::Action> > actions;
+               string ver_in = revision;
+               string ver = ver_in.substr(0, ver_in.find("-"));
+
+               stringstream output;
+               output << "\n<h2>Menu actions</h2>" << endl;
+               output << "<p>\n  Every single menu item in " << PROGRAM_NAME << "'s GUI is accessible by control" << endl;
+               output << "  surfaces or scripts.\n</p>\n" << endl;
+               output << "<p>\n  The list below shows all available values of <em>action-name</em> as of" << endl;
+               output << "  " << PROGRAM_NAME << " " << ver << ". You can get the current list at any" << endl;
+               output << "  time by running " << PROGRAM_NAME << " with the -A flag.\n</p>\n" << endl;
+               output << "<table class=\"dl\">\n  <thead>" << endl;
+               output << "      <tr><th>Action Name</th><th>Menu Name</th></tr>" << endl;
+               output << "  </thead>\n  <tbody>" << endl;
 
                Gtkmm2ext::ActionMap::get_all_actions (paths, labels, tooltips, keys, actions);
 
-               vector<string>::iterator k;
                vector<string>::iterator p;
+               vector<string>::iterator l;
 
-               for (p = paths.begin(), k = keys.begin(); p != paths.end(); ++k, ++p) {
+               for (p = paths.begin(), l = labels.begin(); p != paths.end(); ++p, ++l) {
+                       output << "     <tr><th><kbd class=\"osc\">" << (*p).substr (9, string::npos);
+                       output << "</kbd></th><td>" << *l << "</td></tr>" << endl;
+               }
+               output << "  </tbody>\n  </table>" << endl;
+
+               // output this mess to a browser for easiest X-platform use
+               // it is not pretty HTML, but it works and it's main purpose
+               // is to create raw html to fit in Ardour's manual with no editing
+               gchar* file_name;
+               GError *err = NULL;
+               gint fd;
+
+               if ((fd = g_file_open_tmp ("akprintXXXXXX.html", &file_name, &err)) < 0) {
+                       if (err) {
+                               error << string_compose (_("Could not open temporary file to print bindings (%1)"), err->message) << endmsg;
+                               g_error_free (err);
+                       }
+                       return;
+               }
 
-                       if ((*k).empty()) {
-                               cout << *p << endl;
-                       } else {
-                               cout << *p << " => " << *k << endl;
+#ifdef PLATFORM_WINDOWS
+               ::close (fd);
+#endif
+
+               err = NULL;
+
+               if (!g_file_set_contents (file_name, output.str().c_str(), output.str().size(), &err)) {
+#ifndef PLATFORM_WINDOWS
+                       ::close (fd);
+#endif
+                       g_unlink (file_name);
+                       if (err) {
+                               error << string_compose (_("Could not save bindings to file (%1)"), err->message) << endmsg;
+                               g_error_free (err);
                        }
+                       return;
                }
 
+#ifndef PLATFORM_WINDOWS
+               ::close (fd);
+#endif
+
+               PBD::open_uri (string_compose ("file:///%1", file_name));
+
                halt_connection.disconnect ();
                AudioEngine::instance()->stop ();
                exit (0);
@@ -746,11 +862,12 @@ ARDOUR_UI::~ARDOUR_UI ()
                delete luawindow; luawindow = 0;
                delete editor; editor = 0;
                delete mixer; mixer = 0;
+               delete rc_option_editor; rc_option_editor = 0; // failed to wrap object warning
                delete nsm; nsm = 0;
                delete gui_object_state; gui_object_state = 0;
                delete main_window_visibility;
                FastMeter::flush_pattern_cache ();
-               PixFader::flush_pattern_cache ();
+               ArdourFader::flush_pattern_cache ();
        }
 
 #ifndef NDEBUG
@@ -807,31 +924,31 @@ ARDOUR_UI::configure_handler (GdkEventConfigure* /*conf*/)
 void
 ARDOUR_UI::set_transport_controllable_state (const XMLNode& node)
 {
-       XMLProperty const * prop;
+       std::string str;
 
-       if ((prop = node.property ("roll")) != 0) {
-               roll_controllable->set_id (prop->value());
+       if (node.get_property ("roll", str)){
+               roll_controllable->set_id (str);
        }
-       if ((prop = node.property ("stop")) != 0) {
-               stop_controllable->set_id (prop->value());
+       if (node.get_property ("stop", str)) {
+               stop_controllable->set_id (str);
        }
-       if ((prop = node.property ("goto-start")) != 0) {
-               goto_start_controllable->set_id (prop->value());
+       if (node.get_property ("goto-start", str)) {
+               goto_start_controllable->set_id (str);
        }
-       if ((prop = node.property ("goto-end")) != 0) {
-               goto_end_controllable->set_id (prop->value());
+       if (node.get_property ("goto-end", str)) {
+               goto_end_controllable->set_id (str);
        }
-       if ((prop = node.property ("auto-loop")) != 0) {
-               auto_loop_controllable->set_id (prop->value());
+       if (node.get_property ("auto-loop", str)) {
+               auto_loop_controllable->set_id (str);
        }
-       if ((prop = node.property ("play-selection")) != 0) {
-               play_selection_controllable->set_id (prop->value());
+       if (node.get_property ("play-selection", str)) {
+               play_selection_controllable->set_id (str);
        }
-       if ((prop = node.property ("rec")) != 0) {
-               rec_controllable->set_id (prop->value());
+       if (node.get_property ("rec", str)) {
+               rec_controllable->set_id (str);
        }
-       if ((prop = node.property ("shuttle")) != 0) {
-               shuttle_box.controllable()->set_id (prop->value());
+       if (node.get_property ("shuttle", str)) {
+               shuttle_box.controllable()->set_id (str);
        }
 }
 
@@ -839,24 +956,15 @@ XMLNode&
 ARDOUR_UI::get_transport_controllable_state ()
 {
        XMLNode* node = new XMLNode(X_("TransportControllables"));
-       char buf[64];
 
-       roll_controllable->id().print (buf, sizeof (buf));
-       node->add_property (X_("roll"), buf);
-       stop_controllable->id().print (buf, sizeof (buf));
-       node->add_property (X_("stop"), buf);
-       goto_start_controllable->id().print (buf, sizeof (buf));
-       node->add_property (X_("goto_start"), buf);
-       goto_end_controllable->id().print (buf, sizeof (buf));
-       node->add_property (X_("goto_end"), buf);
-       auto_loop_controllable->id().print (buf, sizeof (buf));
-       node->add_property (X_("auto_loop"), buf);
-       play_selection_controllable->id().print (buf, sizeof (buf));
-       node->add_property (X_("play_selection"), buf);
-       rec_controllable->id().print (buf, sizeof (buf));
-       node->add_property (X_("rec"), buf);
-       shuttle_box.controllable()->id().print (buf, sizeof (buf));
-       node->add_property (X_("shuttle"), buf);
+       node->set_property (X_("roll"), roll_controllable->id());
+       node->set_property (X_("stop"), stop_controllable->id());
+       node->set_property (X_("goto-start"), goto_start_controllable->id());
+       node->set_property (X_("goto-end"), goto_end_controllable->id());
+       node->set_property (X_("auto-loop"), auto_loop_controllable->id());
+       node->set_property (X_("play-selection"), play_selection_controllable->id());
+       node->set_property (X_("rec"), rec_controllable->id());
+       node->set_property (X_("shuttle"), shuttle_box.controllable()->id());
 
        return *node;
 }
@@ -1178,11 +1286,6 @@ ARDOUR_UI::starting ()
 
        BootMessage (string_compose (_("%1 is ready for use"), PROGRAM_NAME));
 
-       if (splash && splash->is_visible()) {
-               // in 1 second, hide the splash screen
-               Glib::signal_timeout().connect (sigc::bind (sigc::ptr_fun (_hide_splash), this), 1000);
-       }
-
        /* all other dialogs are created conditionally */
 
        return 0;
@@ -1823,10 +1926,6 @@ ARDOUR_UI::open_recent_session ()
 
                can_return = false;
        }
-       if (splash && splash->is_visible()) {
-               // in 1 second, hide the splash screen
-               Glib::signal_timeout().connect (sigc::bind (sigc::ptr_fun (_hide_splash), this), 1000);
-       }
 }
 
 bool
@@ -1834,9 +1933,9 @@ ARDOUR_UI::check_audioengine (Gtk::Window& parent)
 {
        if (!AudioEngine::instance()->connected()) {
                MessageDialog msg (parent, string_compose (
-                                          _("%1 is not connected to any audio backend.\n"
-                                            "You cannot open or close sessions in this condition"),
-                                          PROGRAM_NAME));
+                                          _("%1 is not connected to any audio backend.\n"
+                                          "You cannot open or close sessions in this condition"),
+                                          PROGRAM_NAME));
                pop_back_splash (msg);
                msg.run ();
                return false;
@@ -1878,6 +1977,13 @@ ARDOUR_UI::open_session ()
        session_filter.add_pattern (string_compose(X_("*%1"), ARDOUR::statefile_suffix));
        session_filter.set_name (string_compose (_("%1 sessions"), PROGRAM_NAME));
        open_session_selector.add_filter (session_filter);
+
+       FileFilter archive_filter;
+       archive_filter.add_pattern (X_("*.tar.xz"));
+       archive_filter.set_name (_("Session Archives"));
+
+       open_session_selector.add_filter (archive_filter);
+
        open_session_selector.set_filter (session_filter);
 
        int response = open_session_selector.run();
@@ -1892,7 +1998,18 @@ ARDOUR_UI::open_session ()
        bool isnew;
 
        if (session_path.length() > 0) {
-               if (ARDOUR::find_session (session_path, path, name, isnew) == 0) {
+               int rv = ARDOUR::inflate_session (session_path,
+                               Config->get_default_session_parent_dir(), path, name);
+               if (rv == 0) {
+                       _session_is_new = false;
+                       load_session (path, name);
+               }
+               else if (rv < 0) {
+                       MessageDialog msg (_main_window,
+                                       string_compose (_("Extracting session-archive failed: %1"), inflate_error (rv)));
+                       msg.run ();
+               }
+               else if (ARDOUR::find_session (session_path, path, name, isnew) == 0) {
                        _session_is_new = isnew;
                        load_session (path, name);
                }
@@ -1921,15 +2038,18 @@ ARDOUR_UI::session_add_mixed_track (
                Plugin::PresetRecord* pset,
                ARDOUR::PresentationInfo::order_t order)
 {
-       list<boost::shared_ptr<MidiTrack> > tracks;
-
        if (_session == 0) {
                warning << _("You cannot add a track without a session already loaded.") << endmsg;
                return;
        }
 
+       if (Profile->get_mixbus ()) {
+               strict_io = true;
+       }
+
        try {
-               tracks = _session->new_midi_track (input, output, instrument, pset, route_group, how_many, name_template, order, ARDOUR::Normal);
+               list<boost::shared_ptr<MidiTrack> > tracks;
+               tracks = _session->new_midi_track (input, output, strict_io, instrument, pset, route_group, how_many, name_template, order, ARDOUR::Normal);
 
                if (tracks.size() != how_many) {
                        error << string_compose(P_("could not create %1 new mixed track", "could not create %1 new mixed tracks", how_many), how_many) << endmsg;
@@ -1940,12 +2060,6 @@ ARDOUR_UI::session_add_mixed_track (
                display_insufficient_ports_message ();
                return;
        }
-
-       if (strict_io) {
-               for (list<boost::shared_ptr<MidiTrack> >::iterator i = tracks.begin(); i != tracks.end(); ++i) {
-                       (*i)->set_strict_io (true);
-               }
-       }
 }
 
 void
@@ -1958,16 +2072,18 @@ ARDOUR_UI::session_add_midi_bus (
                Plugin::PresetRecord* pset,
                ARDOUR::PresentationInfo::order_t order)
 {
-       RouteList routes;
-
        if (_session == 0) {
                warning << _("You cannot add a track without a session already loaded.") << endmsg;
                return;
        }
 
-       try {
+       if (Profile->get_mixbus ()) {
+               strict_io = true;
+       }
 
-               routes = _session->new_midi_route (route_group, how_many, name_template, instrument, pset, PresentationInfo::MidiBus, order);
+       try {
+               RouteList routes;
+               routes = _session->new_midi_route (route_group, how_many, name_template, strict_io, instrument, pset, PresentationInfo::MidiBus, order);
                if (routes.size() != how_many) {
                        error << string_compose(P_("could not create %1 new Midi Bus", "could not create %1 new Midi Busses", how_many), how_many) << endmsg;
                }
@@ -1977,12 +2093,6 @@ ARDOUR_UI::session_add_midi_bus (
                display_insufficient_ports_message ();
                return;
        }
-
-       if (strict_io) {
-               for (RouteList::iterator i = routes.begin(); i != routes.end(); ++i) {
-                       (*i)->set_strict_io (true);
-               }
-       }
 }
 
 void
@@ -2431,6 +2541,24 @@ ARDOUR_UI::transport_play_preroll ()
        editor->play_with_preroll ();
 }
 
+void
+ARDOUR_UI::transport_rec_preroll ()
+{
+       if (!_session) {
+               return;
+       }
+       editor->rec_with_preroll ();
+}
+
+void
+ARDOUR_UI::transport_rec_count_in ()
+{
+       if (!_session) {
+               return;
+       }
+       editor->rec_with_count_in ();
+}
+
 void
 ARDOUR_UI::transport_rewind (int option)
 {
@@ -2575,11 +2703,15 @@ void
 ARDOUR_UI::blink_handler (bool blink_on)
 {
        transport_rec_enable_blink (blink_on);
-       solo_blink (blink_on);
        sync_blink (blink_on);
+
+       if (!UIConfiguration::instance().get_blink_alert_indicators()) {
+               blink_on = true;
+       }
+       error_blink (blink_on);
+       solo_blink (blink_on);
        audition_blink (blink_on);
        feedback_blink (blink_on);
-       error_blink (blink_on);
 }
 
 void
@@ -2634,6 +2766,33 @@ ARDOUR_UI::save_session_as ()
                return;
        }
 
+       if (_session->dirty()) {
+               vector<string> actions;
+               actions.push_back (_("Abort save-as"));
+               actions.push_back (_("Don't save now, just save-as"));
+               actions.push_back (_("Save it first"));
+               switch (ask_about_saving_session(actions)) {
+                       case -1:
+                               return;
+                               break;
+                       case 1:
+                               if (save_state_canfail ("")) {
+                                       MessageDialog msg (_main_window,
+                                                       string_compose (_("\
+%1 was unable to save your session.\n\n\
+If you still wish to proceeed, please use the\n\n\
+\"Don't save now\" option."), PROGRAM_NAME));
+                                       pop_back_splash(msg);
+                                       msg.run ();
+                                       return;
+                               }
+                               // no break
+                       case 0:
+                               _session->remove_pending_capture_state ();
+                               break;
+               }
+       }
+
        if (!save_as_dialog) {
                save_as_dialog = new SaveAsDialog;
        }
@@ -2668,16 +2827,17 @@ ARDOUR_UI::save_session_as ()
        */
 
        ArdourDialog progress_dialog (_("Save As"), true);
+       ScopedConnection c;
 
        if (sa.include_media && sa.copy_media) {
 
-               Gtk::Label label;
-               Gtk::ProgressBar progress_bar;
+               Gtk::Label* label = manage (new Gtk::Label());
+               Gtk::ProgressBar* progress_bar = manage (new Gtk::ProgressBar ());
 
-               progress_dialog.get_vbox()->pack_start (label);
-               progress_dialog.get_vbox()->pack_start (progress_bar);
-               label.show ();
-               progress_bar.show ();
+               progress_dialog.get_vbox()->pack_start (*label);
+               progress_dialog.get_vbox()->pack_start (*progress_bar);
+               label->show ();
+               progress_bar->show ();
 
                /* this signal will be emitted from within this, the calling thread,
                 * after every file is copied. It provides information on percentage
@@ -2685,9 +2845,7 @@ ARDOUR_UI::save_session_as ()
                 * copied so far, and the total number to copy.
                 */
 
-               ScopedConnection c;
-
-               sa.Progress.connect_same_thread (c, boost::bind (&ARDOUR_UI::save_as_progress_update, this, _1, _2, _3, &label, &progress_bar));
+               sa.Progress.connect_same_thread (c, boost::bind (&ARDOUR_UI::save_as_progress_update, this, _1, _2, _3, label, progress_bar));
 
                progress_dialog.show_all ();
                progress_dialog.present ();
@@ -2699,7 +2857,15 @@ ARDOUR_UI::save_session_as ()
                msg.run ();
        }
 
-       if (!sa.include_media) {
+       /* the logic here may seem odd: why isn't the condition sa.switch_to ?
+        * the trick is this: if the new session was copy with media included,
+        * then Session::save_as() will have already done a neat trick to avoid
+        * us having to unload and load the new state. But if the media was not
+        * included, then this is required (it avoids us having to otherwise
+        * drop all references to media (sources).
+        */
+
+       if (!sa.include_media && sa.switch_to) {
                unload_session (false);
                load_session (sa.final_session_folder_name, sa.new_name);
        }
@@ -2741,13 +2907,16 @@ ARDOUR_UI::quick_snapshot_session (bool switch_to_it)
                time (&n);
                localtime_r (&n, &local_time);
                strftime (timebuf, sizeof(timebuf), "%FT%H.%M.%S", &local_time);
+               if (switch_to_it && _session->dirty ()) {
+                       save_state_canfail ("");
+               }
 
                save_state (timebuf, switch_to_it);
 }
 
 
 bool
-ARDOUR_UI::process_snapshot_session_prompter (ArdourPrompter& prompter, bool switch_to_it)
+ARDOUR_UI::process_snapshot_session_prompter (Prompter& prompter, bool switch_to_it)
 {
        string snapname;
 
@@ -2759,7 +2928,7 @@ ARDOUR_UI::process_snapshot_session_prompter (ArdourPrompter& prompter, bool swi
                char illegal = Session::session_name_is_legal(snapname);
                if (illegal) {
                        MessageDialog msg (string_compose (_("To ensure compatibility with various systems\n"
-                                            "snapshot names may not contain a '%1' character"), illegal));
+                                                            "snapshot names may not contain a '%1' character"), illegal));
                        msg.run ();
                        return false;
                }
@@ -2793,8 +2962,34 @@ ARDOUR_UI::process_snapshot_session_prompter (ArdourPrompter& prompter, bool swi
 void
 ARDOUR_UI::snapshot_session (bool switch_to_it)
 {
-       ArdourPrompter prompter (true);
+       if (switch_to_it && _session->dirty()) {
+               vector<string> actions;
+               actions.push_back (_("Abort saving snapshot"));
+               actions.push_back (_("Don't save now, just snapshot"));
+               actions.push_back (_("Save it first"));
+               switch (ask_about_saving_session(actions)) {
+                       case -1:
+                               return;
+                               break;
+                       case 1:
+                               if (save_state_canfail ("")) {
+                                       MessageDialog msg (_main_window,
+                                                       string_compose (_("\
+%1 was unable to save your session.\n\n\
+If you still wish to proceeed, please use the\n\n\
+\"Don't save now\" option."), PROGRAM_NAME));
+                                       pop_back_splash(msg);
+                                       msg.run ();
+                                       return;
+                               }
+                               // no break
+                       case 0:
+                               _session->remove_pending_capture_state ();
+                               break;
+               }
+       }
 
+       Prompter prompter (true);
        prompter.set_name ("Prompter");
        prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
        if (switch_to_it) {
@@ -2838,7 +3033,7 @@ ARDOUR_UI::rename_session ()
                return;
        }
 
-       ArdourPrompter prompter (true);
+       Prompter prompter (true);
        string name;
 
        prompter.set_name ("Prompter");
@@ -2859,7 +3054,7 @@ ARDOUR_UI::rename_session ()
 
                        if (illegal) {
                                MessageDialog msg (string_compose (_("To ensure compatibility with various systems\n"
-                                                                    "session names may not contain a '%1' character"), illegal));
+                                                                    "session names may not contain a '%1' character"), illegal));
                                msg.run ();
                                goto again;
                        }
@@ -2980,7 +3175,7 @@ ARDOUR_UI::transport_rec_enable_blink (bool onoff)
 }
 
 bool
-ARDOUR_UI::process_save_template_prompter (ArdourPrompter& prompter)
+ARDOUR_UI::process_save_template_prompter (Prompter& prompter)
 {
        string name;
 
@@ -3009,7 +3204,7 @@ ARDOUR_UI::process_save_template_prompter (ArdourPrompter& prompter)
 void
 ARDOUR_UI::save_template ()
 {
-       ArdourPrompter prompter (true);
+       Prompter prompter (true);
 
        if (!check_audioengine (_main_window)) {
                return;
@@ -3035,6 +3230,12 @@ ARDOUR_UI::save_template ()
        }
 }
 
+void ARDOUR_UI::manage_templates ()
+{
+       TemplateDialog td;
+       td.run();
+}
+
 void
 ARDOUR_UI::edit_metadata ()
 {
@@ -3132,7 +3333,7 @@ void
 ARDOUR_UI::load_from_application_api (const std::string& path)
 {
        /* OS X El Capitan (and probably later) now somehow passes the command
-          line arguments to an app via the openFile delegate protocol. Ardour 
+          line arguments to an app via the openFile delegate protocol. Ardour
           already does its own command line processing, and having both
           pathways active causes crashes. So, if the command line was already
           set, do nothing here.
@@ -3209,7 +3410,7 @@ ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new, stri
        /* if there is already a session, relabel the button
           on the SessionDialog so that we don't Quit directly
        */
-       cancel_not_quit = (_session != 0);
+       cancel_not_quit = (_session != 0) && !quit_on_cancel;
 
        if (_session && _session->dirty()) {
                if (unload_session (false)) {
@@ -3282,6 +3483,7 @@ ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new, stri
                                        // user quits from the main 'Session Setup' dialog (i.e. reaching this
                                        // point does NOT indicate an abnormal termination). Therefore, let's
                                        // behave gracefully (i.e. let's do some cleanup) before we call exit()
+                                       assert (!_session);
                                        ARDOUR::cleanup ();
                                        pthread_cancel_all ();
 
@@ -3302,9 +3504,24 @@ ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new, stri
                session_path = session_dialog.session_folder ();
 
                if (nsm) {
-                       likely_new = true;
+                       likely_new = true;
                }
 
+               if (!likely_new) {
+                       int rv = ARDOUR::inflate_session (session_name,
+                                       Config->get_default_session_parent_dir(), session_path, session_name);
+                       if (rv < 0) {
+                               MessageDialog msg (session_dialog,
+                                       string_compose (_("Extracting session-archive failed: %1"), inflate_error (rv)));
+                               msg.run ();
+                               continue;
+                       }
+                       else if (rv == 0) {
+                               session_dialog.set_provided_session (session_name, session_path);
+                       }
+               }
+
+               // XXX check archive, inflate
                string::size_type suffix = session_name.find (statefile_suffix);
 
                if (suffix != string::npos) {
@@ -3324,12 +3541,12 @@ ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new, stri
 
                if (session_name[0] == G_DIR_SEPARATOR ||
 #ifdef PLATFORM_WINDOWS
-                   (session_name.length() > 3 && session_name[1] == ':' && session_name[2] == G_DIR_SEPARATOR)
+                  (session_name.length() > 3 && session_name[1] == ':' && session_name[2] == G_DIR_SEPARATOR)
 #else
-                   (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == G_DIR_SEPARATOR) ||
-                   (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == G_DIR_SEPARATOR)
+                  (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == G_DIR_SEPARATOR) ||
+                  (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == G_DIR_SEPARATOR)
 #endif
-                        )
+               )
                {
 
                        /* absolute path or cwd-relative path specified for session name: infer session folder
@@ -3347,9 +3564,9 @@ ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new, stri
 
                        if (illegal) {
                                MessageDialog msg (session_dialog,
-                                                  string_compose (_("To ensure compatibility with various systems\n"
-                                                                    "session names may not contain a '%1' character"),
-                                                                  illegal));
+                                                  string_compose (_("To ensure compatibility with various systems\n"
+                                                                    "session names may not contain a '%1' character"),
+                                                                  illegal));
                                msg.run ();
                                ARDOUR_COMMAND_LINE::session_name = ""; // cancel that
                                continue;
@@ -3386,7 +3603,7 @@ ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new, stri
                        if (illegal) {
                                pop_back_splash (session_dialog);
                                MessageDialog msg (session_dialog, string_compose(_("To ensure compatibility with various systems\n"
-                                                                                   "session names may not contain a '%1' character"), illegal));
+                                                                                   "session names may not contain a '%1' character"), illegal));
                                msg.run ();
                                ARDOUR_COMMAND_LINE::session_name = ""; // cancel that
                                continue;
@@ -3395,7 +3612,12 @@ ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new, stri
                        _session_is_new = true;
                }
 
-               if (likely_new && template_name.empty()) {
+               if (!template_name.empty() && template_name.substr (0, 11) == "urn:ardour:") {
+
+                       ret = build_session_from_dialog (session_dialog, session_path, session_name);
+                       meta_session_setup (template_name.substr (11));
+
+               } else if (likely_new && template_name.empty()) {
 
                        ret = build_session_from_dialog (session_dialog, session_path, session_name);
 
@@ -3442,10 +3664,6 @@ ARDOUR_UI::close_session()
        if (get_session_parameters (true, false)) {
                exit (1);
        }
-       if (splash && splash->is_visible()) {
-               // in 1 second, hide the splash screen
-               Glib::signal_timeout().connect (sigc::bind (sigc::ptr_fun (_hide_splash), this), 1000);
-       }
 }
 
 /** @param snap_name Snapshot name (without .ardour suffix).
@@ -3454,6 +3672,18 @@ ARDOUR_UI::close_session()
 int
 ARDOUR_UI::load_session (const std::string& path, const std::string& snap_name, std::string mix_template)
 {
+       /* load_session calls flush_pending() which allows
+        * GUI interaction and potentially loading another session
+        * (that was easy via snapshot sidebar).
+        * Recursing into load_session() from load_session() and recusive
+        * event loops causes all kind of crashes.
+        */
+       assert (!session_load_in_progress);
+       if (session_load_in_progress) {
+               return -1;
+       }
+       PBD::Unwinder<bool> lsu (session_load_in_progress, true);
+
        Session *new_session;
        int unload_status;
        int retval = -1;
@@ -3527,8 +3757,8 @@ ARDOUR_UI::load_session (const std::string& path, const std::string& snap_name,
        catch (...) {
 
                MessageDialog msg (string_compose(
-                                          _("Session \"%1 (snapshot %2)\" did not load successfully"),
-                                          path, snap_name),
+                                          _("Session \"%1 (snapshot %2)\" did not load successfully"),
+                                          path, snap_name),
                                   true,
                                   Gtk::MESSAGE_INFO,
                                   BUTTONS_OK);
@@ -3600,7 +3830,22 @@ ARDOUR_UI::load_session (const std::string& path, const std::string& snap_name,
 #endif
        retval = 0;
 
+       if (!mix_template.empty ()) {
+               /* if mix_template is given, assume this is a new session */
+               string metascript = Glib::build_filename (mix_template, "template.lua");
+               meta_session_setup (metascript);
+       }
+
+
   out:
+       /* For successful session load the splash is hidden by ARDOUR_UI::first_idle,
+        * which is queued by set_session().
+        * If session-loading fails we hide it explicitly.
+        * This covers both cases in a central place.
+        */
+       if (retval) {
+               hide_splash ();
+       }
        return retval;
 }
 
@@ -3669,8 +3914,8 @@ ARDOUR_UI::build_session (const std::string& path, const std::string& snap_name,
        /* Put the playhead at 0 and scroll fully left */
        n = new_session->instant_xml (X_("Editor"));
        if (n) {
-               n->add_property (X_("playhead"), X_("0"));
-               n->add_property (X_("left-frame"), X_("0"));
+               n->set_property (X_("playhead"), X_("0"));
+               n->set_property (X_("left-frame"), X_("0"));
        }
 
        set_session (new_session);
@@ -3682,6 +3927,34 @@ ARDOUR_UI::build_session (const std::string& path, const std::string& snap_name,
        return 0;
 }
 
+void
+ARDOUR_UI::meta_session_setup (const std::string& script_path)
+{
+       if (!Glib::file_test (script_path, Glib::FILE_TEST_EXISTS | Glib::FILE_TEST_IS_REGULAR)) {
+               return;
+       }
+
+       LuaState lua;
+       lua.Print.connect (&LuaInstance::_lua_print);
+       lua.sandbox (true);
+
+       lua_State* L = lua.getState();
+       LuaInstance::register_classes (L);
+       LuaBindings::set_session (L, _session);
+       luabridge::push <PublicEditor *> (L, &PublicEditor::instance());
+       lua_setglobal (L, "Editor");
+
+       lua.do_command ("function ardour () end");
+       lua.do_file (script_path);
+
+       try {
+               luabridge::LuaRef fn = luabridge::getGlobal (L, "session_setup");
+               if (fn.isFunction()) {
+                       fn ();
+               }
+       } catch (luabridge::LuaException const& e) { }
+}
+
 void
 ARDOUR_UI::launch_chat ()
 {
@@ -3794,8 +4067,8 @@ ARDOUR_UI::show_splash ()
 void
 ARDOUR_UI::hide_splash ()
 {
-        delete splash;
-        splash = 0;
+       delete splash;
+       splash = 0;
 }
 
 void
@@ -3807,12 +4080,12 @@ ARDOUR_UI::display_cleanup_results (ARDOUR::CleanupReport& rep, const gchar* lis
 
        if (removed == 0) {
                MessageDialog msgd (_main_window,
-                                   _("No files were ready for clean-up"),
-                                   true,
-                                   Gtk::MESSAGE_INFO,
-                                   Gtk::BUTTONS_OK);
+                                   _("No files were ready for clean-up"),
+                                   true,
+                                   Gtk::MESSAGE_INFO,
+                                   Gtk::BUTTONS_OK);
                msgd.set_title (_("Clean-up"));
-               msgd.set_secondary_text (_("If this seems suprising, \n\
+               msgd.set_secondary_text (_("If this seems surprising, \n\
 check for any existing snapshots.\n\
 These may still include regions that\n\
 require some unused files to continue to exist."));
@@ -3824,12 +4097,12 @@ require some unused files to continue to exist."));
        ArdourDialog results (_("Clean-up"), true, false);
 
        struct CleanupResultsModelColumns : public Gtk::TreeModel::ColumnRecord {
-           CleanupResultsModelColumns() {
-                   add (visible_name);
-                   add (fullpath);
-           }
-           Gtk::TreeModelColumn<std::string> visible_name;
-           Gtk::TreeModelColumn<std::string> fullpath;
+               CleanupResultsModelColumns() {
+                       add (visible_name);
+                       add (fullpath);
+               }
+               Gtk::TreeModelColumn<std::string> visible_name;
+               Gtk::TreeModelColumn<std::string> fullpath;
        };
 
 
@@ -4059,7 +4332,7 @@ PresentationInfo::order_t
 ARDOUR_UI::translate_order (RouteDialogs::InsertAt place)
 {
        if (editor->get_selection().tracks.empty()) {
-               return PresentationInfo::max_order;
+               return place == RouteDialogs::First ? 0 : PresentationInfo::max_order;
        }
 
        PresentationInfo::order_t order_hint = PresentationInfo::max_order;
@@ -4107,7 +4380,7 @@ void
 ARDOUR_UI::add_route ()
 {
        if (!add_route_dialog.get (false)) {
-               add_route_dialog->signal_response().connect (sigc::mem_fun (*this, &ARDOUR_UI::add_route_dialog_finished));
+               add_route_dialog->signal_response().connect (sigc::mem_fun (*this, &ARDOUR_UI::add_route_dialog_response));
        }
 
        if (!_session) {
@@ -4124,18 +4397,19 @@ ARDOUR_UI::add_route ()
 }
 
 void
-ARDOUR_UI::add_route_dialog_finished (int r)
+ARDOUR_UI::add_route_dialog_response (int r)
 {
        int count;
 
-       add_route_dialog->hide();
-
        switch (r) {
-               case RESPONSE_ACCEPT:
-                       break;
-               default:
-                       return;
-                       break;
+       case AddRouteDialog::Add:
+               break;
+       case AddRouteDialog::AddAndClose:
+               add_route_dialog->ArdourDialog::on_response (r);
+               break;
+       default:
+               add_route_dialog->ArdourDialog::on_response (r);
+               return;
        }
 
        if ((count = add_route_dialog->count()) <= 0) {
@@ -4196,89 +4470,6 @@ ARDOUR_UI::add_route_dialog_finished (int r)
        }
 }
 
-void
-ARDOUR_UI::add_lua_script ()
-{
-       if (!_session) {
-               return;
-       }
-
-       LuaScriptInfoPtr spi;
-       ScriptSelector ss ("Add Lua Session Script", LuaScriptInfo::Session);
-       switch (ss.run ()) {
-               case Gtk::RESPONSE_ACCEPT:
-                       spi = ss.script();
-                       break;
-               default:
-                       return;
-       }
-       ss.hide();
-
-       std::string script = "";
-
-       try {
-               script = Glib::file_get_contents (spi->path);
-       } catch (Glib::FileError e) {
-               string msg = string_compose (_("Cannot read session script '%1': %2"), spi->path, e.what());
-               MessageDialog am (msg);
-               am.run ();
-               return;
-       }
-
-       LuaScriptParamList lsp = LuaScriptParams::script_params (spi, "sess_params");
-       std::vector<std::string> reg = _session->registered_lua_functions ();
-
-       ScriptParameterDialog spd (_("Set Script Parameters"), spi, reg, lsp);
-       switch (spd.run ()) {
-               case Gtk::RESPONSE_ACCEPT:
-                       break;
-               default:
-                       return;
-       }
-
-       try {
-               _session->register_lua_function (spd.name(), script, lsp);
-       } catch (luabridge::LuaException const& e) {
-               string msg = string_compose (_("Session script '%1' instantiation failed: %2"), spd.name(), e.what ());
-               MessageDialog am (msg);
-               am.run ();
-       } catch (SessionException e) {
-               string msg = string_compose (_("Loading Session script '%1' failed: %2"), spd.name(), e.what ());
-               MessageDialog am (msg);
-               am.run ();
-       }
-}
-
-void
-ARDOUR_UI::remove_lua_script ()
-{
-       if (!_session) {
-               return;
-       }
-       if (_session->registered_lua_function_count () ==  0) {
-               string msg = _("There are no active Lua session scripts present in this session.");
-               MessageDialog am (msg);
-               am.run ();
-               return;
-       }
-
-       std::vector<std::string> reg = _session->registered_lua_functions ();
-       SessionScriptManager sm ("Remove Lua Session Script", reg);
-       switch (sm.run ()) {
-               case Gtk::RESPONSE_ACCEPT:
-                       break;
-               default:
-                       return;
-       }
-       try {
-               _session->unregister_lua_function (sm.name());
-       } catch (luabridge::LuaException const& e) {
-               string msg = string_compose (_("Session script '%1' removal failed: %2"), sm.name(), e.what ());
-               MessageDialog am (msg);
-               am.run ();
-       }
-}
-
 void
 ARDOUR_UI::stop_video_server (bool ask_confirm)
 {
@@ -4347,15 +4538,18 @@ ARDOUR_UI::start_video_server (Gtk::Window* float_window, bool popup_msg)
 
                std::string icsd_exec = video_server_dialog->get_exec_path();
                std::string icsd_docroot = video_server_dialog->get_docroot();
-               if (icsd_docroot.empty()) {
 #ifndef PLATFORM_WINDOWS
-                       icsd_docroot = X_("/");
-#else
-                       icsd_docroot = X_("C:\\");
-#endif
+               if (icsd_docroot.empty()) {
+                       icsd_docroot = VideoUtils::video_get_docroot (Config);
                }
+#endif
 
                GStatBuf sb;
+#ifdef PLATFORM_WINDOWS
+               if (VideoUtils::harvid_version >= 0x000802 && icsd_docroot.empty()) {
+                       /* OK, allow all drive letters */
+               } else
+#endif
                if (g_lstat (icsd_docroot.c_str(), &sb) != 0 || !S_ISDIR(sb.st_mode)) {
                        warning << _("Specified docroot is not an existing directory.") << endmsg;
                        continue;
@@ -4387,12 +4581,16 @@ ARDOUR_UI::start_video_server (Gtk::Window* float_window, bool popup_msg)
                argp[8] = 0;
                stop_video_server();
 
+#ifdef PLATFORM_WINDOWS
+               if (VideoUtils::harvid_version >= 0x000802 && icsd_docroot.empty()) {
+                       /* OK, allow all drive letters */
+               } else
+#endif
                if (icsd_docroot == X_("/") || icsd_docroot == X_("C:\\")) {
                        Config->set_video_advanced_setup(false);
                } else {
-                       std::ostringstream osstream;
-                       osstream << "http://127.0.0.1:" << video_server_dialog->get_listenport() << "/";
-                       Config->set_video_server_url(osstream.str());
+                       std::string url_str = "http://127.0.0.1:" + to_string(video_server_dialog->get_listenport()) + "/";
+                       Config->set_video_server_url(url_str);
                        Config->set_video_server_docroot(icsd_docroot);
                        Config->set_video_advanced_setup(true);
                }
@@ -4524,11 +4722,11 @@ ARDOUR_UI::add_video (Gtk::Window* float_window)
 
        if (video_timeline->video_file_info(path, local_file)) {
                XMLNode* node = new XMLNode(X_("Videotimeline"));
-               node->add_property (X_("Filename"), path);
-               node->add_property (X_("AutoFPS"), auto_set_session_fps?X_("1"):X_("0"));
-               node->add_property (X_("LocalFile"), local_file?X_("1"):X_("0"));
+               node->set_property (X_("Filename"), path);
+               node->set_property (X_("AutoFPS"), auto_set_session_fps);
+               node->set_property (X_("LocalFile"), local_file);
                if (orig_local_file) {
-                       node->add_property (X_("OriginalVideoFile"), orig_path);
+                       node->set_property (X_("OriginalVideoFile"), orig_path);
                } else {
                        node->remove_property (X_("OriginalVideoFile"));
                }
@@ -4740,7 +4938,7 @@ void
 ARDOUR_UI::create_xrun_marker (framepos_t where)
 {
        if (_session) {
-               Location *location = new Location (*_session, where, where, _("xrun"), Location::IsMark);
+               Location *location = new Location (*_session, where, where, _("xrun"), Location::IsMark, 0);
                _session->locations()->add (location);
        }
 }
@@ -4748,8 +4946,8 @@ ARDOUR_UI::create_xrun_marker (framepos_t where)
 void
 ARDOUR_UI::halt_on_xrun_message ()
 {
-        cerr << "HALT on xrun\n";
-        MessageDialog msg (_main_window, _("Recording was stopped because your system could not keep up."));
+       cerr << "HALT on xrun\n";
+       MessageDialog msg (_main_window, _("Recording was stopped because your system could not keep up."));
        msg.run ();
 }
 
@@ -5004,10 +5202,10 @@ audio may be played at the wrong sample rate.\n"), desired, PROGRAM_NAME, actual
        case RESPONSE_ACCEPT:
                return 0;
        default:
-                break;
+               break;
        }
 
-        return 1;
+       return 1;
 }
 
 void
@@ -5103,6 +5301,15 @@ ARDOUR_UI::first_idle ()
                editor->first_idle();
        }
 
+       /* in 1 second, hide the splash screen
+        *
+        * Consider hiding it *now*. If a user opens opens a dialog
+        * during that one second while the splash is still visible,
+        * the dialog will push-back the splash.
+        * Closing the dialog later will pop it back.
+        */
+       Glib::signal_timeout().connect (sigc::bind (sigc::ptr_fun (_hide_splash), this), 1000);
+
        Keyboard::set_can_save_keybindings (true);
        return false;
 }
@@ -5115,9 +5322,9 @@ ARDOUR_UI::store_clock_modes ()
        for (vector<AudioClock*>::iterator x = AudioClock::clocks.begin(); x != AudioClock::clocks.end(); ++x) {
                XMLNode* child = new XMLNode (X_("Clock"));
 
-               child->add_property (X_("name"), (*x)->name());
-               child->add_property (X_("mode"), enum_2_string ((*x)->mode()));
-               child->add_property (X_("on"), ((*x)->off() ? X_("no") : X_("yes")));
+               child->set_property (X_("name"), (*x)->name());
+               child->set_property (X_("mode"), (*x)->mode());
+               child->set_property (X_("on"), (*x)->on());
 
                node->add_child_nocopy (*child);
        }
@@ -5301,15 +5508,61 @@ ARDOUR_UI::session_format_mismatch (std::string xml_path, std::string backup_pat
        const char* end_mono = "</tt>";
 
        MessageDialog msg (string_compose (_("%4This is a session from an older version of %3%5\n\n"
-                                            "%3 has copied the old session file\n\n%6%1%7\n\nto\n\n%6%2%7\n\n"
-                                            "From now on, use the backup copy with older versions of %3"),
-                                          xml_path, backup_path, PROGRAM_NAME,
-                                          start_big, end_big,
-                                          start_mono, end_mono), true);
+                                            "%3 has copied the old session file\n\n%6%1%7\n\nto\n\n%6%2%7\n\n"
+                                            "From now on, use the backup copy with older versions of %3"),
+                                          xml_path, backup_path, PROGRAM_NAME,
+                                          start_big, end_big,
+                                          start_mono, end_mono), true);
 
        msg.run ();
 }
 
+void
+ARDOUR_UI::add_editor_meter_type_item (Menu_Helpers::MenuList& items, RadioMenuItem::Group& group, string const & name, MeterType type)
+{
+       using namespace Menu_Helpers;
+
+       items.push_back (RadioMenuElem (group, name, sigc::bind (sigc::mem_fun (editor_meter, &LevelMeterHBox::set_meter_type), type)));
+       RadioMenuItem* i = dynamic_cast<RadioMenuItem *> (&items.back ());
+       i->set_active (editor_meter->meter_type () == type);
+}
+
+void
+ARDOUR_UI::popup_editor_meter_menu (GdkEventButton* ev)
+{
+       using namespace Gtk::Menu_Helpers;
+
+       Gtk::Menu* m = manage (new Menu);
+       MenuList& items = m->items ();
+
+       RadioMenuItem::Group group;
+
+       _suspend_editor_meter_callbacks = true;
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterPeak), MeterPeak);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterPeak0dB), MeterPeak0dB);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterKrms),  MeterKrms);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterIEC1DIN), MeterIEC1DIN);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterIEC1NOR), MeterIEC1NOR);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterIEC2BBC), MeterIEC2BBC);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterIEC2EBU), MeterIEC2EBU);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterK20), MeterK20);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterK14), MeterK14);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterK12), MeterK12);
+       add_editor_meter_type_item (items, group, ArdourMeter::meter_type_string(MeterVU),  MeterVU);
+
+       m->popup (ev->button, ev->time);
+       _suspend_editor_meter_callbacks = false;
+}
+
+bool
+ARDOUR_UI::editor_meter_button_press (GdkEventButton* ev)
+{
+       if (ev->button == 3 && editor_meter) {
+               popup_editor_meter_menu (ev);
+               return true;
+       }
+       return false;
+}
 
 void
 ARDOUR_UI::reset_peak_display ()
@@ -5344,19 +5597,27 @@ ARDOUR_UI::do_audio_midi_setup (uint32_t desired_sample_rate)
        audio_midi_setup->set_desired_sample_rate (desired_sample_rate);
        audio_midi_setup->set_position (WIN_POS_CENTER);
 
-       if (Config->get_try_autostart_engine () || getenv ("TRY_AUTOSTART_ENGINE")) {
-               audio_midi_setup->try_autostart ();
-               if (ARDOUR::AudioEngine::instance()->running()) {
-                       return 0;
+       if (desired_sample_rate != 0) {
+               if (Config->get_try_autostart_engine () || getenv ("TRY_AUTOSTART_ENGINE")) {
+                       audio_midi_setup->try_autostart ();
+                       if (ARDOUR::AudioEngine::instance()->running()) {
+                               return 0;
+                       }
                }
        }
 
        while (true) {
                int response = audio_midi_setup->run();
-               printf("RESPONSE %d\n", response);
                switch (response) {
                case Gtk::RESPONSE_DELETE_EVENT:
-                       return -1;
+                       // after latency callibration engine may run,
+                       // Running() signal was emitted, but dialog will not
+                       // have emitted a response. The user needs to close
+                       // the dialog -> Gtk::RESPONSE_DELETE_EVENT
+                       if (!AudioEngine::instance()->running()) {
+                               return -1;
+                       }
+                       // fall through
                default:
                        if (!AudioEngine::instance()->running()) {
                                continue;
@@ -5479,7 +5740,7 @@ ARDOUR_UI::audioengine_became_silent ()
 void
 ARDOUR_UI::hide_application ()
 {
-    Application::instance ()-> hide ();
+       Application::instance ()-> hide ();
 }
 
 void
@@ -5516,7 +5777,7 @@ ARDOUR_UI::setup_toplevel_window (Gtk::Window& window, const string& name, void*
        }
 
        window.set_title (title.get_string());
-       window.set_wmclass (string_compose (X_("%1_%1"), downcase (PROGRAM_NAME), downcase (name)), PROGRAM_NAME);
+       window.set_wmclass (string_compose (X_("%1_%1"), downcase (std::string(PROGRAM_NAME)), downcase (name)), PROGRAM_NAME);
 
        window.set_flags (CAN_FOCUS);
        window.add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
@@ -5605,7 +5866,7 @@ ARDOUR_UI::key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey
        bool special_handling_of_unmodified_accelerators = false;
        const guint mask = (Keyboard::RelevantModifierKeyMask & ~(Gdk::SHIFT_MASK|Gdk::LOCK_MASK));
 
-        if (focus) {
+       if (focus) {
 
                /* some widget has keyboard focus */
 
@@ -5628,13 +5889,13 @@ ARDOUR_UI::key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey
                }
        }
 
-        DEBUG_TRACE (DEBUG::Accelerators, string_compose ("Win = %1 [title = %9] focus = %7 (%8) Key event: code = %2  state = %3 special handling ? %4 magic widget focus ? %5 focus widget %6 named %7 mods ? %8\n",
-                                                          win,
-                                                          ev->keyval,
-                                                         Gtkmm2ext::show_gdk_event_state (ev->state),
+       DEBUG_TRACE (DEBUG::Accelerators, string_compose ("Win = %1 [title = %9] focus = %7 (%8) Key event: code = %2  state = %3 special handling ? %4 magic widget focus ? %5 focus widget %6 named %7 mods ? %8\n",
+                                                         win,
+                                                         ev->keyval,
+                                                         Gtkmm2ext::show_gdk_event_state (ev->state),
                                                           special_handling_of_unmodified_accelerators,
                                                           Keyboard::some_magic_widget_has_focus(),
-                                                         focus,
+                                                         focus,
                                                           (focus ? gtk_widget_get_name (focus) : "no focus widget"),
                                                           ((ev->state & mask) ? "yes" : "no"),
                                                           window.get_title()));
@@ -5675,7 +5936,7 @@ ARDOUR_UI::key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey
 
                /* no special handling or there are modifiers in effect: accelerate first */
 
-                DEBUG_TRACE (DEBUG::Accelerators, "\tactivate, then propagate\n");
+               DEBUG_TRACE (DEBUG::Accelerators, "\tactivate, then propagate\n");
                DEBUG_TRACE (DEBUG::Accelerators, string_compose ("\tevent send-event:%1 time:%2 length:%3 name %7 string:%4 hardware_keycode:%5 group:%6\n",
                                                                  ev->send_event, ev->time, ev->length, ev->string, ev->hardware_keycode, ev->group, gdk_keyval_name (ev->keyval)));
 
@@ -5710,12 +5971,12 @@ ARDOUR_UI::key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey
                        return true;
                }
 
-                DEBUG_TRACE (DEBUG::Accelerators, "\tnot accelerated, now propagate\n");
+               DEBUG_TRACE (DEBUG::Accelerators, "\tnot accelerated, now propagate\n");
 
-                if (gtk_window_propagate_key_event (win, ev)) {
-                       DEBUG_TRACE (DEBUG::Accelerators, "\tpropagate handled\n");
-                       return true;
-                }
+               if (gtk_window_propagate_key_event (win, ev)) {
+                       DEBUG_TRACE (DEBUG::Accelerators, "\tpropagate handled\n");
+                       return true;
+               }
 
        } else {