changes to help strp silence
[ardour.git] / gtk2_ardour / ardour_ui.cc
index 875228da9ff032c69773a5c29d8794c6da2206b5..b6486827e476ee9e509a6cffd7d9dde1af2c793a 100644 (file)
 #include "pbd/memento_command.h"
 #include "pbd/file_utils.h"
 
-#include <gtkmm2ext/gtk_ui.h>
-#include <gtkmm2ext/utils.h>
-#include <gtkmm2ext/click_box.h>
-#include <gtkmm2ext/fastmeter.h>
-#include <gtkmm2ext/stop_signal.h>
-#include <gtkmm2ext/popup.h>
-#include <gtkmm2ext/window_title.h>
+#include "gtkmm2ext/gtk_ui.h"
+#include "gtkmm2ext/utils.h"
+#include "gtkmm2ext/click_box.h"
+#include "gtkmm2ext/fastmeter.h"
+#include "gtkmm2ext/stop_signal.h"
+#include "gtkmm2ext/popup.h"
+#include "gtkmm2ext/window_title.h"
 
 #include "midi++/manager.h"
 
@@ -95,6 +95,7 @@ typedef uint64_t microseconds_t;
 #include "route_time_axis.h"
 #include "startup.h"
 #include "engine_dialog.h"
+#include "processor_box.h"
 
 #include "i18n.h"
 
@@ -102,7 +103,6 @@ using namespace ARDOUR;
 using namespace PBD;
 using namespace Gtkmm2ext;
 using namespace Gtk;
-using namespace sigc;
 
 ARDOUR_UI *ARDOUR_UI::theArdourUI = 0;
 UIConfiguration *ARDOUR_UI::ui_config = 0;
@@ -114,12 +114,12 @@ sigc::signal<void,nframes_t, bool, nframes_t> ARDOUR_UI::Clock;
 
 ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
-       : Gtkmm2ext::UI (X_("Ardour"), argcp, argvp),
+       : Gtkmm2ext::UI (X_("gui"), argcp, argvp),
 
-         primary_clock (X_("primary"), false, X_("TransportClockDisplay"), true, false, true),
-         secondary_clock (X_("secondary"), false, X_("SecondaryClockDisplay"), true, false, true),
-         preroll_clock (X_("preroll"), false, X_("PreRollClock"), true, true),
-         postroll_clock (X_("postroll"), false, X_("PostRollClock"), true, true),
+         primary_clock (X_("primary"), false, X_("TransportClockDisplay"), true, true, false, true),
+         secondary_clock (X_("secondary"), false, X_("SecondaryClockDisplay"), true, true, false, true),
+         preroll_clock (X_("preroll"), false, X_("PreRollClock"), true, false, true),
+         postroll_clock (X_("postroll"), false, X_("PostRollClock"), true, false, true),
 
          /* preroll stuff */
 
@@ -128,7 +128,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
          /* big clock */
 
-         big_clock (X_("bigclock"), false, "BigClockNonRecording", true, false, true),
+         big_clock (X_("bigclock"), false, "BigClockNonRecording", true, true, false, true),
 
          /* transport */
 
@@ -193,11 +193,12 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
        editor = 0;
        mixer = 0;
-       session = 0;
        editor = 0;
        engine = 0;
        _session_is_new = false;
        big_clock_window = 0;
+       big_clock_height = 0;
+       big_clock_resize_in_progress = false;
        session_selector_window = 0;
        last_key_press_time = 0;
        _will_create_new_session_automatically = false;
@@ -235,24 +236,24 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
        last_shuttle_request = last_peak_grab = 0; //  get_microseconds();
 
-       ARDOUR::Diskstream::DiskOverrun.connect (mem_fun(*this, &ARDOUR_UI::disk_overrun_handler));
-       ARDOUR::Diskstream::DiskUnderrun.connect (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
+       ARDOUR::Diskstream::DiskOverrun.connect (forever_connections, boost::bind (&ARDOUR_UI::disk_overrun_handler, this), gui_context());
+       ARDOUR::Diskstream::DiskUnderrun.connect (forever_connections, boost::bind (&ARDOUR_UI::disk_underrun_handler, this), gui_context());
 
        /* handle dialog requests */
 
-       ARDOUR::Session::Dialog.connect (mem_fun(*this, &ARDOUR_UI::session_dialog));
+       ARDOUR::Session::Dialog.connect (forever_connections, ui_bind (&ARDOUR_UI::session_dialog, this, _1), gui_context());
 
-       /* handle pending state with a dialog */
+       /* handle pending state with a dialog (PROBLEM: needs to return a value and thus cannot be x-thread) */
 
-       ARDOUR::Session::AskAboutPendingState.connect (mem_fun(*this, &ARDOUR_UI::pending_state_dialog));
+       ARDOUR::Session::AskAboutPendingState.connect_same_thread (forever_connections, boost::bind (&ARDOUR_UI::pending_state_dialog, this));
 
-       /* handle sr mismatch with a dialog */
+       /* handle sr mismatch with a dialog (PROBLEM: needs to return a value and thus cannot be x-thread) */
 
-       ARDOUR::Session::AskAboutSampleRateMismatch.connect (mem_fun(*this, &ARDOUR_UI::sr_mismatch_dialog));
+       ARDOUR::Session::AskAboutSampleRateMismatch.connect_same_thread (forever_connections, boost::bind (&ARDOUR_UI::sr_mismatch_dialog, this, _1, _2));
 
        /* lets get this party started */
 
-       try {
+       try {
                if (ARDOUR::init (ARDOUR_COMMAND_LINE::use_vst, ARDOUR_COMMAND_LINE::try_hw_optimization)) {
                        throw failed_constructor ();
                }
@@ -262,6 +263,8 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
                GainMeter::setup_slider_pix ();
                RouteTimeAxisView::setup_slider_pix ();
+               SendProcessorEntry::setup_slider_pix ();
+               SessionEvent::create_per_thread_pool ("GUI", 512);
 
        } catch (failed_constructor& err) {
                error << _("could not initialize Ardour.") << endmsg;
@@ -271,17 +274,23 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
        /* we like keyboards */
 
-       keyboard = new Keyboard;
+       keyboard = new ArdourKeyboard(*this);
+
+       XMLNode* node = ARDOUR_UI::instance()->keyboard_settings();
+       if (node) {
+               keyboard->set_state (*node, Stateful::loading_state_version);
+       }
 
        reset_dpi();
 
-       starting.connect (mem_fun(*this, &ARDOUR_UI::startup));
-       stopping.connect (mem_fun(*this, &ARDOUR_UI::shutdown));
+       starting.connect (sigc::mem_fun(*this, &ARDOUR_UI::startup));
+       stopping.connect (sigc::mem_fun(*this, &ARDOUR_UI::shutdown));
 
        platform_setup ();
 }
 
-void
+/** @return true if a session was chosen and `apply' clicked, otherwise false if `cancel' was clicked */
+bool
 ARDOUR_UI::run_startup (bool should_be_new)
 {
        if (_startup == 0) {
@@ -293,9 +302,14 @@ ARDOUR_UI::run_startup (bool should_be_new)
 
        main().run();
 
-       /* we don't return here until the startup assistant is finished */
-
        _startup->hide ();
+
+       switch (_startup->response()) {
+       case RESPONSE_OK:
+               return true;
+       default:
+               return false;
+       }
 }
 
 int
@@ -317,10 +331,10 @@ ARDOUR_UI::create_engine ()
                return -1;
        }
 
-       engine->Stopped.connect (mem_fun(*this, &ARDOUR_UI::engine_stopped));
-       engine->Running.connect (mem_fun(*this, &ARDOUR_UI::engine_running));
-       engine->Halted.connect (mem_fun(*this, &ARDOUR_UI::engine_halted));
-       engine->SampleRateChanged.connect (mem_fun(*this, &ARDOUR_UI::update_sample_rate));
+       engine->Stopped.connect (forever_connections, boost::bind (&ARDOUR_UI::engine_stopped, this), gui_context());
+       engine->Running.connect (forever_connections, boost::bind (&ARDOUR_UI::engine_running, this), gui_context());
+       engine->Halted.connect (forever_connections, boost::bind (&ARDOUR_UI::engine_halted, this), gui_context());
+       engine->SampleRateChanged.connect (forever_connections, ui_bind (&ARDOUR_UI::update_sample_rate, this, _1), gui_context());
 
        post_engine ();
 
@@ -335,7 +349,7 @@ ARDOUR_UI::post_engine ()
 
        MIDI::Manager::instance()->set_api_data (engine->jack());
        setup_midi ();
-
+       
        ARDOUR::init_post_engine ();
 
        ActionManager::init ();
@@ -344,7 +358,7 @@ ARDOUR_UI::post_engine ()
        if (setup_windows ()) {
                throw failed_constructor ();
        }
-
+       
        check_memory_locking();
 
        /* this is the first point at which all the keybindings are available */
@@ -379,7 +393,7 @@ ARDOUR_UI::post_engine ()
                primary_clock.set_mode (AudioClock::BBT);
                secondary_clock.set_mode (AudioClock::MinSec);
        }  else {
-               primary_clock.set_mode (AudioClock::SMPTE);
+               primary_clock.set_mode (AudioClock::Timecode);
                secondary_clock.set_mode (AudioClock::BBT);
        }
 
@@ -388,21 +402,25 @@ ARDOUR_UI::post_engine ()
 #ifndef GTKOSX
        /* OS X provides an always visible wallclock, so don't be stupid */
        update_wall_clock ();
-       Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::update_wall_clock), 60000);
+       Glib::signal_timeout().connect (sigc::mem_fun(*this, &ARDOUR_UI::update_wall_clock), 60000);
 #endif
 
        update_disk_space ();
        update_cpu_load ();
        update_sample_rate (engine->frame_rate());
 
+       Config->ParameterChanged.connect (forever_connections, ui_bind (&ARDOUR_UI::parameter_changed, this, _1), gui_context());
+       boost::function<void (string)> pc (boost::bind (&ARDOUR_UI::parameter_changed, this, _1));
+       Config->map_parameters (pc);
+
        /* now start and maybe save state */
 
        if (do_engine_start () == 0) {
-               if (session && _session_is_new) {
+               if (_session && _session_is_new) {
                        /* we need to retain initial visual
                           settings for a new session
                        */
-                       session->save_state ("");
+                       _session->save_state ("");
                }
        }
 }
@@ -452,7 +470,7 @@ ARDOUR_UI::configure_handler (GdkEventConfigure* /*conf*/)
        if (have_configure_timeout) {
                last_configure_time = get_microseconds();
        } else {
-               Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::configure_timeout), 100);
+               Glib::signal_timeout().connect (sigc::mem_fun(*this, &ARDOUR_UI::configure_timeout), 100);
                have_configure_timeout = true;
        }
 
@@ -539,9 +557,9 @@ ARDOUR_UI::save_ardour_state ()
        XMLNode enode(static_cast<Stateful*>(editor)->get_state());
        XMLNode mnode(mixer->get_state());
 
-       if (session) {
-               session->add_instant_xml (enode);
-               session->add_instant_xml (mnode);
+       if (_session) {
+               _session->add_instant_xml (enode);
+               _session->add_instant_xml (mnode);
        } else {
                Config->add_instant_xml (enode);
                Config->add_instant_xml (mnode);
@@ -565,8 +583,8 @@ ARDOUR_UI::autosave_session ()
                 return 1;
        }
 
-        if (session) {
-                session->maybe_write_autosave();
+        if (_session) {
+                _session->maybe_write_autosave();
         }
 
        return 1;
@@ -575,14 +593,14 @@ ARDOUR_UI::autosave_session ()
 void
 ARDOUR_UI::update_autosave ()
 {
-       ENSURE_GUI_THREAD (mem_fun (*this, &ARDOUR_UI::update_autosave));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::update_autosave)
 
-       if (session && session->dirty()) {
+       if (_session && _session->dirty()) {
                if (_autosave_connection.connected()) {
                        _autosave_connection.disconnect();
                }
 
-               _autosave_connection = Glib::signal_timeout().connect (mem_fun (*this, &ARDOUR_UI::autosave_session),
+               _autosave_connection = Glib::signal_timeout().connect (sigc::mem_fun (*this, &ARDOUR_UI::autosave_session),
                                Config->get_periodic_safety_backup_interval() * 1000);
 
        } else {
@@ -632,7 +650,7 @@ Please consider the possibilities, and perhaps (re)start JACK."));
                win.add_button (Stock::OK, RESPONSE_CLOSE);
        } else {
                win.add_button (Stock::QUIT, RESPONSE_CLOSE);
-       }
+       }
 
        win.set_default_response (RESPONSE_CLOSE);
 
@@ -654,7 +672,7 @@ ARDOUR_UI::startup ()
                _startup->engine_control()->set_state (*audio_setup);
        }
 
-       if (get_session_parameters (ARDOUR_COMMAND_LINE::new_session)) {
+       if (get_session_parameters (true, ARDOUR_COMMAND_LINE::new_session)) {
                exit (1);
        }
 
@@ -714,7 +732,7 @@ ARDOUR_UI::check_memory_locking ()
                                HBox hbox;
                                CheckButton cb (_("Do not show this window again"));
 
-                               cb.signal_toggled().connect (mem_fun (*this, &ARDOUR_UI::no_memory_warning));
+                               cb.signal_toggled().connect (sigc::mem_fun (*this, &ARDOUR_UI::no_memory_warning));
 
                                hbox.pack_start (cb, true, false);
                                vbox->pack_start (hbox);
@@ -736,14 +754,14 @@ ARDOUR_UI::check_memory_locking ()
 void
 ARDOUR_UI::finish()
 {
-       if (session) {
+       if (_session) {
 
-               if (session->transport_rolling()) {
-                       session->request_stop ();
+               if (_session->transport_rolling()) {
+                       _session->request_stop ();
                        usleep (250000);
                }
 
-               if (session->dirty()) {
+               if (_session->dirty()) {
                        switch (ask_about_saving_session(_("quit"))) {
                        case -1:
                                return;
@@ -767,7 +785,15 @@ If you still wish to quit, please use the\n\n\
                        }
                }
 
-               session->set_deletion_in_progress ();
+               second_connection.disconnect ();
+               point_one_second_connection.disconnect ();
+               point_oh_five_second_connection.disconnect ();
+               point_zero_one_second_connection.disconnect();
+               
+               // _session->set_deletion_in_progress ();
+               _session->remove_pending_capture_state ();
+               delete _session;
+               _session = 0;
        }
 
        ArdourDialog::close_all_dialogs ();
@@ -801,13 +827,13 @@ ARDOUR_UI::ask_about_saving_session (const string & what)
        string prompt;
        string type;
 
-       if (session->snap_name() == session->name()) {
+       if (_session->snap_name() == _session->name()) {
                type = _("session");
        } else {
                type = _("snapshot");
        }
        prompt = string_compose(_("The %1 \"%2\"\nhas not been saved.\n\nAny changes made this time\nwill be lost unless you save it.\n\nWhat do you want to do?"),
-                        type, session->snap_name());
+                        type, _session->snap_name());
 
        prompt_label.set_text (prompt);
        prompt_label.set_name (X_("PrompterLabel"));
@@ -874,11 +900,11 @@ ARDOUR_UI::every_point_zero_one_seconds ()
 }
 
 void
-ARDOUR_UI::update_sample_rate (nframes_t ignored)
+ARDOUR_UI::update_sample_rate (nframes_t)
 {
        char buf[32];
 
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &ARDOUR_UI::update_sample_rate), ignored));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::update_sample_rate, ignored)
 
        if (!engine->connected()) {
 
@@ -916,14 +942,14 @@ ARDOUR_UI::update_buffer_load ()
        char buf[64];
        uint32_t c, p;
 
-       if (session) {
-               c = session->capture_load ();
-               p = session->playback_load ();
+       if (_session) {
+               c = _session->capture_load ();
+               p = _session->playback_load ();
 
                push_buffer_stats (c, p);
 
                snprintf (buf, sizeof (buf), _("Buffers p:%" PRIu32 "%% c:%" PRIu32 "%%"),
-                         session->playback_load(), session->capture_load());
+                         _session->playback_load(), _session->capture_load());
                buffer_load_label.set_text (buf);
        } else {
                buffer_load_label.set_text ("");
@@ -942,19 +968,19 @@ ARDOUR_UI::count_recenabled_streams (Route& route)
 void
 ARDOUR_UI::update_disk_space()
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
-       nframes_t frames = session->available_capture_duration();
+       nframes_t frames = _session->available_capture_duration();
        char buf[64];
-       nframes_t fr = session->frame_rate();
+       nframes_t fr = _session->frame_rate();
 
        if (frames == max_frames) {
                strcpy (buf, _("Disk: 24hrs+"));
        } else {
                rec_enabled_streams = 0;
-               session->foreach_route (this, &ARDOUR_UI::count_recenabled_streams);
+               _session->foreach_route (this, &ARDOUR_UI::count_recenabled_streams);
 
                if (rec_enabled_streams) {
                        frames /= rec_enabled_streams;
@@ -1106,7 +1132,7 @@ ARDOUR_UI::build_session_selector ()
        recent_session_display.append_column (_("Recent Sessions"), recent_session_columns.visible_name);
        recent_session_display.set_headers_visible (false);
        recent_session_display.get_selection()->set_mode (SELECTION_BROWSE);
-       recent_session_display.signal_row_activated().connect (mem_fun (*this, &ARDOUR_UI::recent_session_row_activated));
+       recent_session_display.signal_row_activated().connect (sigc::mem_fun (*this, &ARDOUR_UI::recent_session_row_activated));
 
        scroller->add (recent_session_display);
        scroller->set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
@@ -1129,7 +1155,7 @@ ARDOUR_UI::recent_session_row_activated (const TreePath& /*path*/, TreeViewColum
 void
 ARDOUR_UI::open_recent_session ()
 {
-       bool can_return = (session != 0);
+       bool can_return = (_session != 0);
 
        if (session_selector_window == 0) {
                build_session_selector ();
@@ -1211,7 +1237,7 @@ ARDOUR_UI::open_session ()
 
                /* ardour sessions are folders */
 
-               open_session_selector = new Gtk::FileChooserDialog (_("open session"), FILE_CHOOSER_ACTION_OPEN);
+               open_session_selector = new Gtk::FileChooserDialog (_("Open Session"), FILE_CHOOSER_ACTION_OPEN);
                open_session_selector->add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
                open_session_selector->add_button (Gtk::Stock::OPEN, Gtk::RESPONSE_ACCEPT);
                open_session_selector->set_default_response(Gtk::RESPONSE_ACCEPT);
@@ -1253,7 +1279,7 @@ ARDOUR_UI::session_add_midi_route (bool disk, RouteGroup* route_group, uint32_t
 {
        list<boost::shared_ptr<MidiTrack> > tracks;
 
-       if (session == 0) {
+       if (_session == 0) {
                warning << _("You cannot add a track without a session already loaded.") << endmsg;
                return;
        }
@@ -1261,7 +1287,7 @@ ARDOUR_UI::session_add_midi_route (bool disk, RouteGroup* route_group, uint32_t
        try {
                if (disk) {
 
-                       tracks = session->new_midi_track (ARDOUR::Normal, route_group, how_many);
+                       tracks = _session->new_midi_track (ARDOUR::Normal, route_group, how_many);
 
                        if (tracks.size() != how_many) {
                                if (how_many == 1) {
@@ -1271,7 +1297,7 @@ ARDOUR_UI::session_add_midi_route (bool disk, RouteGroup* route_group, uint32_t
                                }
                        }
                } /*else {
-                       if ((route = session->new_midi_route ()) == 0) {
+                       if ((route = _session->new_midi_route ()) == 0) {
                                error << _("could not create new midi bus") << endmsg;
                        }
                }*/
@@ -1289,19 +1315,19 @@ restart JACK with more ports."));
 
 
 void
-ARDOUR_UI::session_add_audio_route (bool track, int32_t input_channels, int32_t output_channels, ARDOUR::TrackMode mode, RouteGroup* route_group, uint32_t how_many)
+ARDOUR_UI::session_add_audio_route (bool track, bool aux, int32_t input_channels, int32_t output_channels, ARDOUR::TrackMode mode, RouteGroup* route_group, uint32_t how_many)
 {
        list<boost::shared_ptr<AudioTrack> > tracks;
        RouteList routes;
 
-       if (session == 0) {
+       if (_session == 0) {
                warning << _("You cannot add a track or bus without a session already loaded.") << endmsg;
                return;
        }
 
        try {
                if (track) {
-                       tracks = session->new_audio_track (input_channels, output_channels, mode, route_group, how_many);
+                       tracks = _session->new_audio_track (input_channels, output_channels, mode, route_group, how_many);
 
                        if (tracks.size() != how_many) {
                                if (how_many == 1) {
@@ -1314,7 +1340,7 @@ ARDOUR_UI::session_add_audio_route (bool track, int32_t input_channels, int32_t
 
                } else {
 
-                       routes = session->new_audio_route (input_channels, output_channels, route_group, how_many);
+                       routes = _session->new_audio_route (aux, input_channels, output_channels, route_group, how_many);
 
                        if (routes.size() != how_many) {
                                if (how_many == 1) {
@@ -1354,9 +1380,9 @@ ARDOUR_UI::do_transport_locate (nframes_t new_position)
 {
        nframes_t _preroll = 0;
 
-       if (session) {
+       if (_session) {
                // XXX CONFIG_CHANGE FIX - requires AnyTime handling
-               // _preroll = session->convert_to_frames_at (new_position, Config->get_preroll());
+               // _preroll = _session->convert_to_frames_at (new_position, Config->get_preroll());
 
                if (new_position > _preroll) {
                        new_position -= _preroll;
@@ -1364,23 +1390,22 @@ ARDOUR_UI::do_transport_locate (nframes_t new_position)
                        new_position = 0;
                }
 
-               session->request_locate (new_position);
+               _session->request_locate (new_position);
        }
 }
 
 void
 ARDOUR_UI::transport_goto_start ()
 {
-       if (session) {
-               session->goto_start();
-
+       if (_session) {
+               _session->goto_start();
 
                /* force displayed area in editor to start no matter
                   what "follow playhead" setting is.
                */
 
                if (editor) {
-                       editor->reset_x_origin (session->current_start_frame());
+                       editor->center_screen (_session->current_start_frame ());
                }
        }
 }
@@ -1388,9 +1413,8 @@ ARDOUR_UI::transport_goto_start ()
 void
 ARDOUR_UI::transport_goto_zero ()
 {
-       if (session) {
-               session->request_locate (0);
-
+       if (_session) {
+               _session->request_locate (0);
 
                /* force displayed area in editor to start no matter
                   what "follow playhead" setting is.
@@ -1405,7 +1429,7 @@ ARDOUR_UI::transport_goto_zero ()
 void
 ARDOUR_UI::transport_goto_wallclock ()
 {
-       if (session && editor) {
+       if (_session && editor) {
 
                time_t now;
                struct tm tmnow;
@@ -1414,18 +1438,18 @@ ARDOUR_UI::transport_goto_wallclock ()
                time (&now);
                localtime_r (&now, &tmnow);
 
-               frames = tmnow.tm_hour * (60 * 60 * session->frame_rate());
-               frames += tmnow.tm_min * (60 * session->frame_rate());
-               frames += tmnow.tm_sec * session->frame_rate();
+               frames = tmnow.tm_hour * (60 * 60 * _session->frame_rate());
+               frames += tmnow.tm_min * (60 * _session->frame_rate());
+               frames += tmnow.tm_sec * _session->frame_rate();
 
-               session->request_locate (frames);
+               _session->request_locate (frames);
 
                /* force displayed area in editor to start no matter
                   what "follow playhead" setting is.
                */
 
                if (editor) {
-                       editor->reset_x_origin (frames - (editor->current_page_frames()/2));
+                       editor->center_screen (frames);
                }
        }
 }
@@ -1433,16 +1457,16 @@ ARDOUR_UI::transport_goto_wallclock ()
 void
 ARDOUR_UI::transport_goto_end ()
 {
-       if (session) {
-               nframes_t frame = session->current_end_frame();
-               session->request_locate (frame);
+       if (_session) {
+               nframes_t const frame = _session->current_end_frame();
+               _session->request_locate (frame);
 
                /* force displayed area in editor to start no matter
                   what "follow playhead" setting is.
                */
 
                if (editor) {
-                       editor->reset_x_origin (frame);
+                       editor->center_screen (frame);
                }
        }
 }
@@ -1450,27 +1474,23 @@ ARDOUR_UI::transport_goto_end ()
 void
 ARDOUR_UI::transport_stop ()
 {
-       if (!session) {
+       if (!_session) {
                return;
        }
 
-       if (session->is_auditioning()) {
-               session->cancel_audition ();
+       if (_session->is_auditioning()) {
+               _session->cancel_audition ();
                return;
        }
 
-       if (session->get_play_loop ()) {
-               session->request_play_loop (false);
-       }
-
-       session->request_stop ();
+       _session->request_stop ();
 }
 
 void
 ARDOUR_UI::transport_stop_and_forget_capture ()
 {
-       if (session) {
-               session->request_stop (true);
+       if (_session) {
+               _session->request_stop (true);
        }
 }
 
@@ -1486,75 +1506,154 @@ void
 ARDOUR_UI::transport_record (bool roll)
 {
 
-       if (session) {
-               switch (session->record_status()) {
+       if (_session) {
+               switch (_session->record_status()) {
                case Session::Disabled:
-                       if (session->ntracks() == 0) {
+                       if (_session->ntracks() == 0) {
                                MessageDialog msg (*editor, _("Please create 1 or more track\nbefore trying to record.\nCheck the Session menu."));
                                msg.run ();
                                return;
                        }
-                       session->maybe_enable_record ();
+                       _session->maybe_enable_record ();
                        if (roll) {
                                transport_roll ();
                        }
                        break;
                case Session::Recording:
                        if (roll) {
-                               session->request_stop();
+                               _session->request_stop();
                        } else {
-                               session->disable_record (false, true);
+                               _session->disable_record (false, true);
                        }
                        break;
 
                case Session::Enabled:
-                       session->disable_record (false, true);
+                       _session->disable_record (false, true);
                }
        }
-       //cerr << "ARDOUR_UI::transport_record () called roll = " << roll << " session->record_status() = " << session->record_status() << endl;
+       //cerr << "ARDOUR_UI::transport_record () called roll = " << roll << " _session->record_status() = " << _session->record_status() << endl;
 }
 
-void
+void 
 ARDOUR_UI::transport_roll ()
 {
-       bool rolling;
+       if (!_session) {
+               return;
+       }
+
+       if (_session->is_auditioning()) {
+               return;
+       }
+       
+       if (_session->config.get_external_sync()) {
+               switch (_session->config.get_sync_source()) {
+               case JACK:
+                       break;
+               default:
+                       /* transport controlled by the master */
+                       return;
+               }
+       }
+
+       bool rolling = _session->transport_rolling();
+
+       if (_session->get_play_loop()) {
+               _session->request_play_loop (false, true);
+       } else if (_session->get_play_range () && !join_play_range_button.get_active()) {
+               /* stop playing a range if we currently are */
+               _session->request_play_range (0, true);
+       }
+
+       if (join_play_range_button.get_active()) {
+               _session->request_play_range (&editor->get_selection().time, true);
+       }
+
+       if (!rolling) {
+               _session->request_transport_speed (1.0f);
+       }
 
-       if (!session) {
+       map_transport_state ();
+}
+
+void
+ARDOUR_UI::toggle_roll (bool with_abort, bool roll_out_of_bounded_mode)
+{
+       
+       if (!_session) {
                return;
        }
 
-       rolling = session->transport_rolling ();
+       if (_session->is_auditioning()) {
+               _session->cancel_audition ();
+               return;
+       }
+       
+       if (_session->config.get_external_sync()) {
+               switch (_session->config.get_sync_source()) {
+               case JACK:
+                       break;
+               default:
+                       /* transport controlled by the master */
+                       return;
+               }
+       }
 
-       //cerr << "ARDOUR_UI::transport_roll () called session->record_status() = " << session->record_status() << endl;
+       bool rolling = _session->transport_rolling();
+       bool affect_transport = true;
 
-       if (session->get_play_loop()) {
-               session->request_play_loop (false);
-               auto_loop_button.set_visual_state (1);
-               roll_button.set_visual_state (1);
-       } else if (session->get_play_range ()) {
-               session->request_play_range (false);
-               play_selection_button.set_visual_state (0);
-       } else if (rolling) {
-               session->request_locate (session->last_transport_start(), true);
+       if (rolling && roll_out_of_bounded_mode) {
+               /* drop out of loop/range playback but leave transport rolling */
+               if (_session->get_play_loop()) {
+                       if (Config->get_seamless_loop()) {
+                               /* the disk buffers contain copies of the loop - we can't 
+                                  just keep playing, so stop the transport. the user
+                                  can restart as they wish.
+                               */
+                               affect_transport = true;
+                       } else {
+                               /* disk buffers are normal, so we can keep playing */
+                               affect_transport = false;
+                       }
+                       _session->request_play_loop (false, true);
+               } else if (_session->get_play_range ()) {
+                       affect_transport = false;
+                       _session->request_play_range (0, true);
+               } 
+       } 
+
+       if (affect_transport) {
+               if (rolling) {
+                       _session->request_stop (with_abort, true);
+               } else {
+                       if (join_play_range_button.get_active()) {
+                               _session->request_play_range (&editor->get_selection().time, true);
+                       }
+                       
+                       _session->request_transport_speed (1.0f);
+               }
        }
 
-       session->request_transport_speed (1.0f);
+       map_transport_state (); 
 }
 
 void
-ARDOUR_UI::transport_loop()
+ARDOUR_UI::toggle_session_auto_loop ()
 {
-       if (session) {
-               if (session->get_play_loop()) {
-                       if (session->transport_rolling()) {
-                               Location * looploc = session->locations()->auto_loop_location();
+       if (_session) {
+               if (_session->get_play_loop()) {
+                       if (_session->transport_rolling()) {
+                               Location * looploc = _session->locations()->auto_loop_location();
                                if (looploc) {
-                                       session->request_locate (looploc->start(), true);
+                                       _session->request_locate (looploc->start(), true);
                                }
+                       } else {
+                               _session->request_play_loop (false);
+                       }
+               } else {
+                       Location * looploc = _session->locations()->auto_loop_location();
+                       if (looploc) {
+                               _session->request_play_loop (true);
                        }
-               }
-               else {
-                       session->request_play_loop (true);
                }
        }
 }
@@ -1562,14 +1661,10 @@ ARDOUR_UI::transport_loop()
 void
 ARDOUR_UI::transport_play_selection ()
 {
-       if (!session) {
+       if (!_session) {
                return;
        }
 
-       if (!session->get_play_range()) {
-               session->request_stop ();
-       }
-
        editor->play_selection ();
 }
 
@@ -1578,24 +1673,24 @@ ARDOUR_UI::transport_rewind (int option)
 {
        float current_transport_speed;
 
-               if (session) {
-               current_transport_speed = session->transport_speed();
+               if (_session) {
+               current_transport_speed = _session->transport_speed();
 
                if (current_transport_speed >= 0.0f) {
                        switch (option) {
                        case 0:
-                               session->request_transport_speed (-1.0f);
+                               _session->request_transport_speed (-1.0f);
                                break;
                        case 1:
-                               session->request_transport_speed (-4.0f);
+                               _session->request_transport_speed (-4.0f);
                                break;
                        case -1:
-                               session->request_transport_speed (-0.5f);
+                               _session->request_transport_speed (-0.5f);
                                break;
                        }
                } else {
                        /* speed up */
-                       session->request_transport_speed (current_transport_speed * 1.5f);
+                       _session->request_transport_speed (current_transport_speed * 1.5f);
                }
        }
 }
@@ -1605,38 +1700,39 @@ ARDOUR_UI::transport_forward (int option)
 {
        float current_transport_speed;
 
-       if (session) {
-               current_transport_speed = session->transport_speed();
+       if (_session) {
+               current_transport_speed = _session->transport_speed();
 
                if (current_transport_speed <= 0.0f) {
                        switch (option) {
                        case 0:
-                               session->request_transport_speed (1.0f);
+                               _session->request_transport_speed (1.0f);
                                break;
                        case 1:
-                               session->request_transport_speed (4.0f);
+                               _session->request_transport_speed (4.0f);
                                break;
                        case -1:
-                               session->request_transport_speed (0.5f);
+                               _session->request_transport_speed (0.5f);
                                break;
                        }
                } else {
                        /* speed up */
-                       session->request_transport_speed (current_transport_speed * 1.5f);
+                       _session->request_transport_speed (current_transport_speed * 1.5f);
                }
+
        }
 }
 
 void
 ARDOUR_UI::toggle_record_enable (uint32_t dstream)
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
        boost::shared_ptr<Route> r;
 
-       if ((r = session->route_by_remote_id (dstream)) != 0) {
+       if ((r = _session->route_by_remote_id (dstream)) != 0) {
 
                Track* t;
 
@@ -1644,37 +1740,80 @@ ARDOUR_UI::toggle_record_enable (uint32_t dstream)
                        t->diskstream()->set_record_enabled (!t->diskstream()->record_enabled());
                }
        }
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 }
 
-void
-ARDOUR_UI::queue_transport_change ()
-{
-       Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &ARDOUR_UI::map_transport_state));
-}
-
 void
 ARDOUR_UI::map_transport_state ()
 {
-       float sp = session->transport_speed();
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::map_transport_state)
+
+       if (!_session) {
+               auto_loop_button.set_visual_state (0);
+               play_selection_button.set_visual_state (0);
+               roll_button.set_visual_state (0);
+               stop_button.set_visual_state (1);
+               return;
+       }
+
+       float sp = _session->transport_speed();
 
        if (sp == 1.0f) {
-               transport_rolling ();
-       } else if (sp < 0.0f) {
-               transport_rewinding ();
-       } else if (sp > 0.0f) {
-               transport_forwarding ();
+               shuttle_fract = SHUTTLE_FRACT_SPEED1;  /* speed = 1.0, believe it or not */
+               shuttle_box.queue_draw ();
+       } else if (sp == 0.0f) {
+               shuttle_fract = 0;
+               shuttle_box.queue_draw ();
+               update_disk_space ();
+       }
+
+       if (sp != 0.0) {
+
+               /* we're rolling */
+
+               if (_session->get_play_range()) {
+
+                       play_selection_button.set_visual_state (1);
+                       roll_button.set_visual_state (0);
+                       auto_loop_button.set_visual_state (0);
+
+               } else if (_session->get_play_loop ()) {
+                       
+                       auto_loop_button.set_visual_state (1);
+                       play_selection_button.set_visual_state (0);
+                       roll_button.set_visual_state (0);
+
+               } else {
+                       
+                       roll_button.set_visual_state (1);
+                       play_selection_button.set_visual_state (0);
+                       auto_loop_button.set_visual_state (0);
+               }
+
+               if (join_play_range_button.get_active()) {
+                       /* light up both roll and play-selection if they are joined */
+                       roll_button.set_visual_state (1);
+                       play_selection_button.set_visual_state (1);
+               }
+
+               stop_button.set_visual_state (0);
+
        } else {
-               transport_stopped ();
+
+               stop_button.set_visual_state (1);
+               roll_button.set_visual_state (0);
+               play_selection_button.set_visual_state (0);
+               auto_loop_button.set_visual_state (0);
        }
+
 }
 
 void
 ARDOUR_UI::engine_stopped ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_stopped));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::engine_stopped)
        ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, false);
        ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, true);
 }
@@ -1682,7 +1821,7 @@ ARDOUR_UI::engine_stopped ()
 void
 ARDOUR_UI::engine_running ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_running));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::engine_running)
        ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, true);
        ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, false);
 
@@ -1733,7 +1872,7 @@ ARDOUR_UI::engine_running ()
 void
 ARDOUR_UI::engine_halted ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_halted));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::engine_halted)
 
        ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, false);
        ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, true);
@@ -1778,14 +1917,14 @@ void
 ARDOUR_UI::update_clocks ()
 {
        if (!editor || !editor->dragging_playhead()) {
-               Clock (session->audible_frame(), false, editor->get_preferred_edit_position()); /* EMIT_SIGNAL */
+               Clock (_session->audible_frame(), false, editor->get_preferred_edit_position()); /* EMIT_SIGNAL */
        }
 }
 
 void
 ARDOUR_UI::start_clocking ()
 {
-       clock_signal_connection = RapidScreenUpdate.connect (mem_fun(*this, &ARDOUR_UI::update_clocks));
+       clock_signal_connection = RapidScreenUpdate.connect (sigc::mem_fun(*this, &ARDOUR_UI::update_clocks));
 }
 
 void
@@ -1860,6 +1999,7 @@ ARDOUR_UI::snapshot_session ()
 
        prompter.set_name ("Prompter");
        prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
+       prompter.set_title (_("Take Snapshot"));
        prompter.set_prompt (_("Name of New Snapshot"));
        prompter.set_initial_text (timebuf);
 
@@ -1871,7 +2011,7 @@ ARDOUR_UI::snapshot_session ()
                bool do_save = (snapname.length() != 0);
 
                vector<sys::path> p;
-               get_state_files_in_directory (session->session_directory().root_path(), p);
+               get_state_files_in_directory (_session->session_directory().root_path(), p);
                vector<string> n = get_file_names_no_extension (p);
                if (find (n.begin(), n.end(), snapname) != n.end()) {
 
@@ -1907,14 +2047,14 @@ ARDOUR_UI::save_state (const string & name)
 int
 ARDOUR_UI::save_state_canfail (string name)
 {
-       if (session) {
+       if (_session) {
                int ret;
 
                if (name.length() == 0) {
-                       name = session->snap_name();
+                       name = _session->snap_name();
                }
 
-               if ((ret = session->save_state (name)) != 0) {
+               if ((ret = _session->save_state (name)) != 0) {
                        return ret;
                }
        }
@@ -1925,36 +2065,36 @@ ARDOUR_UI::save_state_canfail (string name)
 void
 ARDOUR_UI::primary_clock_value_changed ()
 {
-       if (session) {
-               session->request_locate (primary_clock.current_time ());
+       if (_session) {
+               _session->request_locate (primary_clock.current_time ());
        }
 }
 
 void
 ARDOUR_UI::big_clock_value_changed ()
 {
-       if (session) {
-               session->request_locate (big_clock.current_time ());
+       if (_session) {
+               _session->request_locate (big_clock.current_time ());
        }
 }
 
 void
 ARDOUR_UI::secondary_clock_value_changed ()
 {
-       if (session) {
-               session->request_locate (secondary_clock.current_time ());
+       if (_session) {
+               _session->request_locate (secondary_clock.current_time ());
        }
 }
 
 void
 ARDOUR_UI::transport_rec_enable_blink (bool onoff)
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
-       Session::RecordState const r = session->record_status ();
-       bool const h = session->have_rec_enabled_diskstream ();
+       Session::RecordState const r = _session->record_status ();
+       bool const h = _session->have_rec_enabled_diskstream ();
 
        if (r == Session::Enabled || (r == Session::Recording && !h)) {
                if (onoff) {
@@ -1971,7 +2111,6 @@ ARDOUR_UI::transport_rec_enable_blink (bool onoff)
 
 void
 ARDOUR_UI::save_template ()
-
 {
        ArdourPrompter prompter (true);
        string name;
@@ -1981,8 +2120,9 @@ ARDOUR_UI::save_template ()
        }
 
        prompter.set_name (X_("Prompter"));
+       prompter.set_title (_("Save Mix Template"));
        prompter.set_prompt (_("Name for mix template:"));
-       prompter.set_initial_text(session->name() + _("-template"));
+       prompter.set_initial_text(_session->name() + _("-template"));
        prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
 
        switch (prompter.run()) {
@@ -1990,7 +2130,7 @@ ARDOUR_UI::save_template ()
                prompter.get_result (name);
 
                if (name.length()) {
-                       session->save_template (name);
+                       _session->save_template (name);
                }
                break;
 
@@ -2003,7 +2143,7 @@ void
 ARDOUR_UI::edit_metadata ()
 {
        SessionMetadataEditor dialog;
-       dialog.set_session (session);
+       dialog.set_session (_session);
        editor->ensure_float (dialog);
        dialog.run ();
 }
@@ -2012,7 +2152,7 @@ void
 ARDOUR_UI::import_metadata ()
 {
        SessionMetadataImporter dialog;
-       dialog.set_session (session);
+       dialog.set_session (_session);
        editor->ensure_float (dialog);
        dialog.run ();
 }
@@ -2125,7 +2265,8 @@ ARDOUR_UI::ask_about_loading_existing_session (const Glib::ustring& session_path
                           true);
 
 
-       msg.set_name (X_("CleanupDialog"));
+       msg.set_name (X_("OpenExistingDialog"));
+       msg.set_title (_("Open Existing Session"));
        msg.set_wmclass (X_("existing_session"), "Ardour");
        msg.set_position (Gtk::WIN_POS_MOUSE);
        pop_back_splash ();
@@ -2182,12 +2323,14 @@ ARDOUR_UI::build_session_from_nsd (const Glib::ustring& session_path, const Glib
 
                /// @todo some minor tweaks.
 
-               if (_startup->connect_outs_to_master()) {
-                       oconnect = AutoConnectMaster;
-               } else if (_startup->connect_outs_to_physical()) {
-                       oconnect = AutoConnectPhysical;
-               } else {
-                       oconnect = AutoConnectOption (0);
+               oconnect = AutoConnectOption (0);
+
+               if (_startup->connect_outputs ()) {
+                       if (_startup->connect_outs_to_master()) {
+                               oconnect = AutoConnectMaster;
+                       } else if (_startup->connect_outs_to_physical()) {
+                               oconnect = AutoConnectPhysical;
+                       }
                }
 
                nphysin = (uint32_t) _startup->input_limit_count();
@@ -2213,7 +2356,7 @@ ARDOUR_UI::build_session_from_nsd (const Glib::ustring& session_path, const Glib
 void
 ARDOUR_UI::idle_load (const Glib::ustring& path)
 {
-       if (session) {
+       if (_session) {
                if (Glib::file_test (path, Glib::FILE_TEST_IS_DIR)) {
                        /* /path/to/foo => /path/to/foo, foo */
                        load_session (path, basename_nosuffix (path));
@@ -2259,8 +2402,9 @@ ARDOUR_UI::loading_message (const std::string& /*msg*/)
        flush_pending ();
 }
 
+/** @param quit_on_cancel true if exit() should be called if the user clicks `cancel' in the new session dialog */
 int
-ARDOUR_UI::get_session_parameters (bool should_be_new)
+ARDOUR_UI::get_session_parameters (bool quit_on_cancel, bool should_be_new)
 {
        Glib::ustring session_name;
        Glib::ustring session_path;
@@ -2287,7 +2431,14 @@ ARDOUR_UI::get_session_parameters (bool should_be_new)
 
                } else {
 
-                       run_startup (should_be_new);
+                       bool const apply = run_startup (should_be_new);
+                       if (!apply) {
+                               if (quit_on_cancel) {
+                                       exit (1);
+                               } else {
+                                       return ret;
+                               }
+                       }
 
                        /* if we run the startup dialog again, offer more than just "new session" */
 
@@ -2305,7 +2456,6 @@ ARDOUR_UI::get_session_parameters (bool should_be_new)
                                _session_is_new = true;
                        }
 
-
                        if (session_name[0] == '/' ||
                            (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
                            (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
@@ -2357,7 +2507,7 @@ ARDOUR_UI::get_session_parameters (bool should_be_new)
 
                        ret = load_session (session_path, session_name, template_name);
                        if (!ARDOUR_COMMAND_LINE::immediate_save.empty()) {
-                               session->save_state (ARDOUR_COMMAND_LINE::immediate_save, false);
+                               _session->save_state (ARDOUR_COMMAND_LINE::immediate_save, false);
                                exit (1);
                        }
                }
@@ -2376,7 +2526,7 @@ ARDOUR_UI::close_session()
        unload_session (true);
 
        ARDOUR_COMMAND_LINE::session_name = "";
-       get_session_parameters (false);
+       get_session_parameters (true, false);
 }
 
 int
@@ -2461,14 +2611,14 @@ ARDOUR_UI::load_session (const Glib::ustring& path, const Glib::ustring& snap_na
                goto out;
        }
 
-       connect_to_session (new_session);
+       set_session (new_session);
 
        session_loaded = true;
 
        goto_editor_window ();
 
-       if (session) {
-               session->set_clean ();
+       if (_session) {
+               _session->set_clean ();
        }
 
        flush_pending ();
@@ -2520,7 +2670,7 @@ ARDOUR_UI::build_session (const Glib::ustring& path, const Glib::ustring& snap_n
                return -1;
        }
 
-       connect_to_session (new_session);
+       set_session (new_session);
 
        session_loaded = true;
 
@@ -2548,7 +2698,7 @@ ARDOUR_UI::show_about ()
 {
        if (about == 0) {
                about = new About;
-               about->signal_response().connect(mem_fun (*this, &ARDOUR_UI::about_signal_response) );
+               about->signal_response().connect(sigc::mem_fun (*this, &ARDOUR_UI::about_signal_response) );
        }
 
        about->show_all ();
@@ -2596,7 +2746,7 @@ ARDOUR_UI::hide_splash ()
 }
 
 void
-ARDOUR_UI::display_cleanup_results (Session::cleanup_report& rep, const gchar* list_title,
+ARDOUR_UI::display_cleanup_results (ARDOUR::CleanupReport& rep, const gchar* list_title,
                                    const string& plural_msg, const string& singular_msg)
 {
        size_t removed;
@@ -2652,7 +2802,7 @@ require some unused files to continue to exist."));
 
        dimage->set_alignment(ALIGN_LEFT, ALIGN_TOP);
 
-       const string dead_sound_directory = session->session_directory().dead_sound_path().to_string();
+       const string dead_sound_directory = _session->session_directory().dead_sound_path().to_string();
 
 
 
@@ -2720,7 +2870,7 @@ require some unused files to continue to exist."));
 void
 ARDOUR_UI::cleanup ()
 {
-       if (session == 0) {
+       if (_session == 0) {
                /* shouldn't happen: menu item is insensitive */
                return;
        }
@@ -2751,7 +2901,7 @@ After cleanup, unused audio files will be moved to a \
                return;
        }
 
-       Session::cleanup_report rep;
+       ARDOUR::CleanupReport rep;
 
        editor->prepare_for_cleanup ();
 
@@ -2762,7 +2912,7 @@ After cleanup, unused audio files will be moved to a \
                act->set_sensitive (false);
        }
 
-       if (session->cleanup_sources (rep)) {
+       if (_session->cleanup_sources (rep)) {
                editor->finish_cleanup ();
                return;
        }
@@ -2793,14 +2943,14 @@ release an additional\n\
 void
 ARDOUR_UI::flush_trash ()
 {
-       if (session == 0) {
+       if (_session == 0) {
                /* shouldn't happen: menu item is insensitive */
                return;
        }
 
-       Session::cleanup_report rep;
+       ARDOUR::CleanupReport rep;
 
-       if (session->cleanup_trash_sources (rep)) {
+       if (_session->cleanup_trash_sources (rep)) {
                return;
        }
 
@@ -2819,12 +2969,12 @@ ARDOUR_UI::add_route (Gtk::Window* float_window)
 {
        int count;
 
-       if (!session) {
+       if (!_session) {
                return;
        }
 
        if (add_route_dialog == 0) {
-               add_route_dialog = new AddRouteDialog (*session);
+               add_route_dialog = new AddRouteDialog (_session);
                if (float_window) {
                        add_route_dialog->set_transient_for (*float_window);
                }
@@ -2854,7 +3004,7 @@ ARDOUR_UI::add_route (Gtk::Window* float_window)
        string template_path = add_route_dialog->track_template();
 
        if (!template_path.empty()) {
-               session->new_route_from_template (count, template_path);
+               _session->new_route_from_template (count, template_path);
                return;
        }
 
@@ -2862,12 +3012,13 @@ ARDOUR_UI::add_route (Gtk::Window* float_window)
        uint32_t output_chan;
        string name_template = add_route_dialog->name_template ();
        bool track = add_route_dialog->track ();
+       bool aux = !track && add_route_dialog->aux();
        RouteGroup* route_group = add_route_dialog->route_group ();
 
        AutoConnectOption oac = Config->get_output_auto_connect();
 
        if (oac & AutoConnectMaster) {
-               output_chan = (session->master_out() ? session->master_out()->n_inputs().n_audio() : input_chan);
+               output_chan = (_session->master_out() ? _session->master_out()->n_inputs().n_audio() : input_chan);
        } else {
                output_chan = input_chan;
        }
@@ -2887,7 +3038,7 @@ ARDOUR_UI::add_route (Gtk::Window* float_window)
                if (track) {
                        session_add_audio_track (input_chan, output_chan, add_route_dialog->mode(), route_group, count);
                } else {
-                       session_add_audio_bus (input_chan, output_chan, route_group, count);
+                       session_add_audio_bus (aux, input_chan, output_chan, route_group, count);
                }
        }
 }
@@ -2897,8 +3048,8 @@ ARDOUR_UI::mixer_settings () const
 {
        XMLNode* node = 0;
 
-       if (session) {
-               node = session->instant_xml(X_("Mixer"));
+       if (_session) {
+               node = _session->instant_xml(X_("Mixer"));
        } else {
                node = Config->instant_xml(X_("Mixer"));
        }
@@ -2915,8 +3066,8 @@ ARDOUR_UI::editor_settings () const
 {
        XMLNode* node = 0;
 
-       if (session) {
-               node = session->instant_xml(X_("Editor"));
+       if (_session) {
+               node = _session->instant_xml(X_("Editor"));
        } else {
                node = Config->instant_xml(X_("Editor"));
        }
@@ -2964,17 +3115,17 @@ ARDOUR_UI::halt_on_xrun_message ()
 void
 ARDOUR_UI::xrun_handler(nframes_t where)
 {
-       if (!session) {
+       if (!_session) {
                return;
        }
 
-       ENSURE_GUI_THREAD (bind(mem_fun(*this, &ARDOUR_UI::xrun_handler), where));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::xrun_handler, where)
 
-       if (session && Config->get_create_xrun_marker() && session->actively_recording()) {
+       if (_session && Config->get_create_xrun_marker() && _session->actively_recording()) {
                create_xrun_marker(where);
        }
 
-       if (session && Config->get_stop_recording_on_xrun() && session->actively_recording()) {
+       if (_session && Config->get_stop_recording_on_xrun() && _session->actively_recording()) {
                halt_on_xrun_message ();
        }
 }
@@ -2995,42 +3146,43 @@ ARDOUR_UI::push_buffer_stats (uint32_t capture, uint32_t playback)
 void
 ARDOUR_UI::write_buffer_stats ()
 {
+       std::ofstream fout;
        struct tm tm;
        char buf[64];
+       char path[PATH_MAX+1];  int fd;
+
+       strcpy (path, "ardourBufferingXXXXXX");
 
-       char* tmplt = (char*)calloc(strlen("ardourXXXXXX"), sizeof(char));
-       int fd = mkstemp (tmplt);
-       if (fd) {
+       if ((fd = mkstemp (path )) < 0) {
                cerr << X_("cannot find temporary name for ardour buffer stats") << endl;
                return;
        }
+       
+       fout.open (path);
+       close (fd);
 
-       FILE* fout = fdopen (fd, "w");
        if (!fout) {
-               cerr << string_compose (X_("cannot open file %1 for ardour buffer stats"), tmplt) << endl;
+               cerr << string_compose (X_("cannot open file %1 for ardour buffer stats"), path) << endl;
                return;
        }
 
        for (list<DiskBufferStat>::iterator i = disk_buffer_stats.begin(); i != disk_buffer_stats.end(); ++i) {
-               std::ostringstream ss;
                localtime_r (&(*i).when, &tm);
                strftime (buf, sizeof (buf), "%T", &tm);
-               fprintf(fout, "%s %u %u\n", buf, (*i).capture, (*i).playback);
+               fout << buf << ' ' << (*i).capture << ' ' << (*i).playback << endl;
        }
-
+       
        disk_buffer_stats.clear ();
 
-       fclose (fout);
-       close (fd);
+       fout.close ();
 
-       cerr << "Ardour buffering statistics can be found in: " << tmplt << endl;
-       free (tmplt);
+       cerr << "Ardour buffering statistics can be found in: " << path << endl;
 }
 
 void
 ARDOUR_UI::disk_overrun_handler ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::disk_overrun_handler));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::disk_overrun_handler)
 
        write_buffer_stats ();
 
@@ -3042,7 +3194,7 @@ was not able to keep up with Ardour.\n\
 \n\
 Specifically, it failed to write data to disk\n\
 quickly enough to keep up with recording.\n"));
-               msg->signal_response().connect (bind (mem_fun (*this, &ARDOUR_UI::disk_speed_dialog_gone), msg));
+               msg->signal_response().connect (sigc::bind (sigc::mem_fun (*this, &ARDOUR_UI::disk_speed_dialog_gone), msg));
                msg->show ();
        }
 }
@@ -3050,7 +3202,7 @@ quickly enough to keep up with recording.\n"));
 void
 ARDOUR_UI::disk_underrun_handler ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::disk_underrun_handler)
 
        write_buffer_stats ();
 
@@ -3062,7 +3214,7 @@ was not able to keep up with Ardour.\n\
 \n\
 Specifically, it failed to read data from disk\n\
 quickly enough to keep up with playback.\n"));
-               msg->signal_response().connect (bind (mem_fun (*this, &ARDOUR_UI::disk_speed_dialog_gone), msg));
+               msg->signal_response().connect (sigc::bind (sigc::mem_fun (*this, &ARDOUR_UI::disk_speed_dialog_gone), msg));
                msg->show ();
        }
 }
@@ -3077,7 +3229,7 @@ ARDOUR_UI::disk_speed_dialog_gone (int /*ignored_response*/, MessageDialog* msg)
 void
 ARDOUR_UI::session_dialog (std::string msg)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &ARDOUR_UI::session_dialog), msg));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::session_dialog, msg)
 
        MessageDialog* d;
 
@@ -3217,19 +3369,19 @@ ARDOUR_UI::update_transport_clocks (nframes_t pos)
 void
 ARDOUR_UI::record_state_changed ()
 {
-       ENSURE_GUI_THREAD (mem_fun (*this, &ARDOUR_UI::record_state_changed));
+       ENSURE_GUI_THREAD (*this, &ARDOUR_UI::record_state_changed);
 
-       if (!session || !big_clock_window) {
+       if (!_session || !big_clock_window) {
                /* why bother - the clock isn't visible */
                return;
        }
 
-       Session::RecordState const r = session->record_status ();
-       bool const h = session->have_rec_enabled_diskstream ();
+       Session::RecordState const r = _session->record_status ();
+       bool const h = _session->have_rec_enabled_diskstream ();
 
        if (r == Session::Recording && h)  {
                big_clock.set_widget_name ("BigClockRecording");
-        } else {
+       } else {
                big_clock.set_widget_name ("BigClockNonRecording");
        }
 }
@@ -3237,8 +3389,8 @@ ARDOUR_UI::record_state_changed ()
 bool
 ARDOUR_UI::first_idle ()
 {
-       if (session) {
-               session->allow_auto_play (true);
+       if (_session) {
+               _session->allow_auto_play (true);
        }
 
        if (editor) {
@@ -3258,8 +3410,8 @@ ARDOUR_UI::store_clock_modes ()
                node->add_property ((*x)->name().c_str(), enum_2_string ((*x)->mode()));
        }
 
-       session->add_extra_xml (*node);
-       session->set_dirty ();
+       _session->add_extra_xml (*node);
+       _session->set_dirty ();
 }