Mackie Control: Re-enable view_mode display and make sure all text vanishes after...
[ardour.git] / libs / surfaces / mackie / mackie_control_protocol.cc
index 9f9f33b633d484d3690335b5f9cba0f4e58d9c67..dfd3fe63342a1f325d9c9fc42648c934ba908e02 100644 (file)
@@ -31,6 +31,7 @@
 #include <errno.h>
 
 #include <boost/shared_array.hpp>
+#include <glibmm/miscutils.h>
 
 #include "midi++/types.h"
 #include "midi++/port.h"
 #include "pbd/memento_command.h"
 #include "pbd/convert.h"
 
+#include "ardour/audio_track.h"
 #include "ardour/automation_control.h"
 #include "ardour/async_midi_port.h"
 #include "ardour/dB.h"
 #include "ardour/debug.h"
 #include "ardour/location.h"
 #include "ardour/meter.h"
+#include "ardour/midi_track.h"
 #include "ardour/panner.h"
 #include "ardour/panner_shell.h"
+#include "ardour/profile.h"
 #include "ardour/route.h"
+#include "ardour/route_group.h"
 #include "ardour/session.h"
 #include "ardour/tempo.h"
 #include "ardour/track.h"
@@ -102,11 +107,13 @@ MackieControlProtocol::MackieControlProtocol (Session& session)
        : ControlProtocol (session, X_("Mackie"))
        , AbstractUI<MackieControlUIRequest> ("mackie")
        , _current_initial_bank (0)
+       , _frame_last (0)
        , _timecode_type (ARDOUR::AnyTime::BBT)
        , _gui (0)
        , _scrub_mode (false)
        , _flip_mode (Normal)
        , _view_mode (Mixer)
+       , _subview_mode (None)
        , _pot_mode (Pan)
        , _current_selected_track (-1)
        , _modifier_state (0)
@@ -114,15 +121,20 @@ MackieControlProtocol::MackieControlProtocol (Session& session)
        , needs_ipmidi_restart (false)
        , _metering_active (true)
        , _initialized (false)
-       , _surfaces_state (0)
-       , _surfaces_version (0)
-       , _session_load (true)
+       , configuration_state (0)
+       , state_version (0)
 {
        DEBUG_TRACE (DEBUG::MackieControl, "MackieControlProtocol::MackieControlProtocol\n");
 
        DeviceInfo::reload_device_info ();
        DeviceProfile::reload_device_profiles ();
 
+       for (int i = 0; i < 9; i++) {
+               _last_bank[i] = 0;
+       }
+
+       _last_bank[Mixer] = _current_selected_track;
+
        TrackSelectionChanged.connect (gui_connections, MISSING_INVALIDATOR, boost::bind (&MackieControlProtocol::gui_track_selection_changed, this, _1, true), this);
 
        _instance = this;
@@ -144,7 +156,7 @@ MackieControlProtocol::~MackieControlProtocol()
        DEBUG_TRACE (DEBUG::MackieControl, "MackieControlProtocol::~MackieControlProtocol tear_down_gui ()\n");
        tear_down_gui ();
 
-       delete _surfaces_state;
+       delete configuration_state;
 
        /* stop event loop */
        DEBUG_TRACE (DEBUG::MackieControl, "MackieControlProtocol::~MackieControlProtocol BaseUI::quit ()\n");
@@ -280,25 +292,76 @@ MackieControlProtocol::get_sorted_routes()
                if (route_is_locked_to_strip(route)) {
                        continue;
                }
-               /* This next section which is not used yet, looks wrong to me
-                       The first four belong here but the bottom five are not a selection
-                       of routes and belong elsewhere as they are v-pot modes.
-               */
+
                switch (_view_mode) {
                case Mixer:
+                       if (route->route_group()) {
+                               route->route_group()->set_active (true, this);
+                       }
+                       sorted.push_back (route);
+                       remote_ids.insert (route->remote_control_id());
                        break;
                case AudioTracks:
+                       if (is_audio_track(route)) {
+                               if (route->route_group()) {
+                                       route->route_group()->set_active (true, this);
+                               }
+                               sorted.push_back (route);
+                               remote_ids.insert (route->remote_control_id());
+                       }
                        break;
                case Busses:
+                       if (Profile->get_mixbus()) {
+#ifdef MIXBUS
+                               if (route->mixbus()) {
+                                       sorted.push_back (route);
+                                       remote_ids.insert (route->remote_control_id());
+                               }
+#endif                         
+                       } else {
+                               if (!is_track(route)) {
+                                       if (route->route_group()) {
+                                               route->route_group()->set_active (true, this);
+                                       }
+                                       sorted.push_back (route);
+                                       remote_ids.insert (route->remote_control_id());
+                               }
+                       }
                        break;
                case MidiTracks:
+                       if (is_midi_track(route)) {
+                               if (route->route_group()) {
+                                       route->route_group()->set_active (true, this);
+                               }
+                               sorted.push_back (route);
+                               remote_ids.insert (route->remote_control_id());
+                       }
+                       break;
+               case Plugins:
+                       break;
+               case Auxes: // in ardour, for now aux and buss are same. for mixbus, see "Busses" case above
+                       if (!is_track(route)) {
+                               if (route->route_group()) {
+                                       route->route_group()->set_active (true, this);
+                               }
+                               sorted.push_back (route);
+                               remote_ids.insert (route->remote_control_id());
+                       }
                        break;
-               case Loop:
+               case Selected: // For example: a group
+                       if (selected(route)) {
+                               /* Selected may be a group in which case we want to
+                                * control each track separately.
+                                */
+                               if (route->route_group()) {
+                                       route->route_group()->set_active (false, this);
+                               }
+                               sorted.push_back (route);
+                               remote_ids.insert (route->remote_control_id());
+                       }
                        break;
                }
 
-               sorted.push_back (*it);
-               remote_ids.insert (route->remote_control_id());
        }
 
        sort (sorted.begin(), sorted.end(), RouteByRemoteId());
@@ -342,7 +405,6 @@ MackieControlProtocol::switch_banks (uint32_t initial, bool force)
                 */
                return;
        }
-       set_flip_mode (Normal);
        _current_initial_bank = initial;
        _current_selected_track = -1;
 
@@ -374,12 +436,9 @@ MackieControlProtocol::switch_banks (uint32_t initial, bool force)
                }
        }
 
-       /* reset this to get the right display of view mode after the switch */
-       set_view_mode (_view_mode);
-
        /* make sure selection is correct */
 
-       _gui_track_selection_changed (&_last_selected_routes, false);
+       _gui_track_selection_changed (&_last_selected_routes, false, false);
 
        /* current bank has not been saved */
        session->set_dirty();
@@ -532,17 +591,21 @@ MackieControlProtocol::update_timecode_beats_led()
 void
 MackieControlProtocol::update_global_button (int id, LedState ls)
 {
-       Glib::Threads::Mutex::Lock lm (surfaces_lock);
+       boost::shared_ptr<Surface> surface;
 
-       if (surfaces.empty()) {
-               return;
-       }
+       {
+               Glib::Threads::Mutex::Lock lm (surfaces_lock);
 
-       if (!_device_info.has_global_controls()) {
-               return;
+               if (surfaces.empty()) {
+                       return;
+               }
+
+               if (!_device_info.has_global_controls()) {
+                       return;
+               }
+               // surface needs to be master surface
+               surface = _master_surface;
        }
-       // surface needs to be master surface
-       boost::shared_ptr<Surface> surface = _master_surface;
 
        map<int,Control*>::iterator x = surface->controls_by_device_independent_id.find (id);
        if (x != surface->controls_by_device_independent_id.end()) {
@@ -588,6 +651,7 @@ MackieControlProtocol::device_ready ()
 
        DEBUG_TRACE (DEBUG::MackieControl, string_compose ("device ready init (active=%1)\n", active()));
        update_surfaces ();
+       set_pot_mode (_pot_mode);
 }
 
 // send messages to surface to set controls to correct values
@@ -640,6 +704,7 @@ MackieControlProtocol::connect_session_signals()
 {
        // receive routes added
        session->RouteAdded.connect(session_connections, MISSING_INVALIDATOR, boost::bind (&MackieControlProtocol::notify_route_added, this, _1), this);
+       session->RouteAddedOrRemoved.connect(session_connections, MISSING_INVALIDATOR, boost::bind (&MackieControlProtocol::notify_route_added_or_removed, this), this);
        // receive record state toggled
        session->RecordStateChanged.connect(session_connections, MISSING_INVALIDATOR, boost::bind (&MackieControlProtocol::notify_record_state_changed, this), this);
        // receive transport state changed
@@ -663,14 +728,10 @@ MackieControlProtocol::connect_session_signals()
 void
 MackieControlProtocol::set_profile (const string& profile_name)
 {
-       if (profile_name == "default") {
-               /* reset to default */
-               _device_profile = DeviceProfile (profile_name);
-       }
-
        map<string,DeviceProfile>::iterator d = DeviceProfile::device_profiles.find (profile_name);
 
        if (d == DeviceProfile::device_profiles.end()) {
+               _device_profile = DeviceProfile (profile_name);
                return;
        }
 
@@ -700,21 +761,15 @@ MackieControlProtocol::set_device (const string& device_name, bool force)
                /* already using that device, nothing to do */
                return 0;
        }
-
        /* get state from the current setup, and make sure it is stored in
-          the _surface_states node so that if we switch back to this device,
+          the configuration_states node so that if we switch back to this device,
           we will have its state available.
        */
 
-       if (!_surfaces_state) {
-               _surfaces_state = new XMLNode (X_("Surfaces"));
-       }
-
        {
                Glib::Threads::Mutex::Lock lm (surfaces_lock);
-
-               for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
-                       update_surface_state (*s);
+               if (!surfaces.empty()) {
+                       update_configuration_state ();
                }
        }
 
@@ -788,7 +843,8 @@ MackieControlProtocol::create_surfaces ()
                if (!is_master) {
                        device_name = string_compose (X_("mackie control ext %1"), n+1);
                }
-       DEBUG_TRACE (DEBUG::MackieControl, string_compose ("Port Name for surface %1 is %2\n", n, device_name));
+
+               DEBUG_TRACE (DEBUG::MackieControl, string_compose ("Port Name for surface %1 is %2\n", n, device_name));
 
                boost::shared_ptr<Surface> surface;
 
@@ -807,8 +863,22 @@ MackieControlProtocol::create_surfaces ()
                        _master_surface = surface;
                }
 
-               if (_surfaces_state) {
-                       surface->set_state (*_surfaces_state, _surfaces_version);
+               if (configuration_state) {
+                       XMLNode* this_device = 0;
+                       XMLNodeList const& devices = configuration_state->children();
+                       for (XMLNodeList::const_iterator d = devices.begin(); d != devices.end(); ++d) {
+                               XMLProperty* prop = (*d)->property (X_("name"));
+                               if (prop && prop->value() == _device_info.name()) {
+                                       this_device = *d;
+                                       break;
+                               }
+                       }
+                       if (this_device) {
+                               XMLNode* snode = this_device->child (X_("Surfaces"));
+                               if (snode) {
+                                       surface->set_state (*snode, state_version);
+                               }
+                       }
                }
 
                {
@@ -901,16 +971,32 @@ MackieControlProtocol::close()
        clear_surfaces();
 }
 
-/** Ensure that the _surfaces_state XML node contains an up-to-date
- *  copy of the state node for @param surface. If _surfaces_state already
- *  contains a state node for @param surface, it will deleted and replaced.
+/** Ensure that the configuration_state XML node contains an up-to-date
+ *  copy of the state node the current device. If configuration_state already
+ *  contains a state node for the device, it will deleted and replaced.
  */
 void
-MackieControlProtocol::update_surface_state (boost::shared_ptr<Surface> surface)
+MackieControlProtocol::update_configuration_state ()
 {
-       assert (_surfaces_state);
-       _surfaces_state->remove_nodes_and_delete (X_("name"), surface->name());
-       _surfaces_state->add_child_nocopy (surface->get_state());
+       /* CALLER MUST HOLD SURFACES LOCK */
+
+       if (!configuration_state) {
+               configuration_state = new XMLNode (X_("Configurations"));
+       }
+
+       XMLNode* devnode = new XMLNode (X_("Configuration"));
+       devnode->add_property (X_("name"), _device_info.name());
+
+       configuration_state->remove_nodes_and_delete (X_("name"), _device_info.name());
+       configuration_state->add_child_nocopy (*devnode);
+
+       XMLNode* snode = new XMLNode (X_("Surfaces"));
+
+       for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+               snode->add_child_nocopy ((*s)->get_state());
+       }
+
+       devnode->add_child_nocopy (*snode);
 }
 
 XMLNode&
@@ -932,19 +1018,13 @@ MackieControlProtocol::get_state()
        node.add_property (X_("device-profile"), _device_profile.name());
        node.add_property (X_("device-name"), _device_info.name());
 
-       if (!_surfaces_state) {
-               _surfaces_state = new XMLNode (X_("Surfaces"));
-       }
-
        {
                Glib::Threads::Mutex::Lock lm (surfaces_lock);
-               for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
-                       update_surface_state (*s);
-               }
+               update_configuration_state ();
        }
 
        /* force a copy of the _surfaces_state node, because we want to retain ownership */
-       node.add_child_copy (*_surfaces_state);
+       node.add_child_copy (*configuration_state);
 
        DEBUG_TRACE (DEBUG::MackieControl, "MackieControlProtocol::get_state done\n");
 
@@ -978,17 +1058,27 @@ MackieControlProtocol::set_state (const XMLNode & node, int version)
        }
 
        if ((prop = node.property (X_("device-profile"))) != 0) {
-               set_profile (prop->value());
+               if (prop->value().empty()) {
+                       string default_profile_name;
+
+                       default_profile_name = Glib::get_user_name();
+                       default_profile_name += ' ';
+                       default_profile_name += _device_info.name();
+
+                       set_profile (default_profile_name);
+               } else {
+                       set_profile (prop->value());
+               }
        }
 
-       XMLNode* snode = node.child (X_("Surfaces"));
+       XMLNode* dnode = node.child (X_("Configurations"));
 
-       delete _surfaces_state;
-       _surfaces_state = 0;
+       delete configuration_state;
+       configuration_state = 0;
 
-       if (snode) {
-               _surfaces_state = new XMLNode (*snode);
-               _surfaces_version = version;
+       if (dnode) {
+               configuration_state = new XMLNode (*dnode);
+               state_version = version;
        }
 
        switch_banks (bank, true);
@@ -1063,6 +1153,13 @@ MackieControlProtocol::update_timecode_display()
        // do assignment here so current_frame is fixed
        framepos_t current_frame = session->transport_frame();
        string timecode;
+       // For large jumps in play head possition do full reset
+       int moved = (current_frame - _frame_last) / session->frame_rate ();
+       if (moved) {
+               DEBUG_TRACE (DEBUG::MackieControl, "Timecode reset\n");
+               _timecode_last = string (10, ' ');
+       }
+       _frame_last = current_frame;
 
        switch (_timecode_type) {
        case ARDOUR::AnyTime::BBT:
@@ -1102,6 +1199,15 @@ void MackieControlProtocol::notify_parameter_changed (std::string const & p)
        }
 }
 
+void
+MackieControlProtocol::notify_route_added_or_removed ()
+{
+       Glib::Threads::Mutex::Lock lm (surfaces_lock);
+       for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+               (*s)->master_monitor_may_have_changed ();
+       }
+}
+
 // RouteList is the set of routes that have just been added
 void
 MackieControlProtocol::notify_route_added (ARDOUR::RouteList & rl)
@@ -1114,6 +1220,15 @@ MackieControlProtocol::notify_route_added (ARDOUR::RouteList & rl)
                }
        }
 
+       /* special case: single route, and it is the monitor or master out */
+
+       if (rl.size() == 1 && (rl.front()->is_monitor() || rl.front()->is_master())) {
+               Glib::Threads::Mutex::Lock lm (surfaces_lock);
+               for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+                       (*s)->master_monitor_may_have_changed ();
+               }
+       }
+
        // currently assigned banks are less than the full set of
        // strips, so activate the new strip now.
 
@@ -1203,6 +1318,9 @@ MackieControlProtocol::notify_transport_state_changed()
        update_global_button (Button::Rewind, session->transport_speed() < 0.0);
        update_global_button (Button::Ffwd, session->transport_speed() > 1.0);
 
+       // sometimes a return to start leaves time code at old time
+       _timecode_last = string (10, ' ');
+
        notify_metering_state_changed ();
 }
 
@@ -1376,7 +1494,6 @@ MackieControlProtocol::build_button_map ()
        DEFINE_BUTTON_HANDLER (Button::UserA, &MackieControlProtocol::user_a_press, &MackieControlProtocol::user_a_release);
        DEFINE_BUTTON_HANDLER (Button::UserB, &MackieControlProtocol::user_b_press, &MackieControlProtocol::user_b_release);
        DEFINE_BUTTON_HANDLER (Button::MasterFaderTouch, &MackieControlProtocol::master_fader_touch_press, &MackieControlProtocol::master_fader_touch_release);
-
 }
 
 void
@@ -1506,43 +1623,169 @@ MackieControlProtocol::clear_ports ()
        }
 }
 
+void
+MackieControlProtocol::notify_subview_route_deleted ()
+{
+       /* return to global/mixer view */
+       _subview_route.reset ();
+       set_view_mode (Mixer);
+}
+
+void
+MackieControlProtocol::set_subview_mode (SubViewMode sm, boost::shared_ptr<Route> r)
+{
+       SubViewMode old_mode = _subview_mode;
+       boost::shared_ptr<Route> old_route = _subview_route;
+
+       _subview_mode = sm;
+
+       if (r) {
+               /* retain _subview_route even if it is reset to null implicitly */
+               _subview_route = r;
+       }
+
+       if ((_subview_mode != old_mode) || (_subview_route != old_route)) {
+
+               if (r != old_route) {
+                       subview_route_connections.drop_connections ();
+                       if (_subview_route) {
+                               _subview_route->DropReferences.connect (subview_route_connections, MISSING_INVALIDATOR, boost::bind (&MackieControlProtocol::notify_subview_route_deleted, this), this);
+                       }
+               }
+
+               /* subview mode did actually change */
+
+               {
+                       Surfaces copy; /* can't hold surfaces lock while calling Strip::subview_mode_changed */
+
+                       {
+                               Glib::Threads::Mutex::Lock lm (surfaces_lock);
+                               copy = surfaces;
+                       }
+
+                       for (Surfaces::iterator s = copy.begin(); s != copy.end(); ++s) {
+                               (*s)->subview_mode_changed ();
+                       }
+               }
+
+               if (_subview_mode != old_mode) {
+
+                       /* turn buttons related to vpot mode on or off as required */
+
+                       switch (_subview_mode) {
+                       case MackieControlProtocol::None:
+                               pot_mode_globals ();
+                               break;
+                       case MackieControlProtocol::EQ:
+                               update_global_button (Button::Eq, on);
+                               update_global_button (Button::Dyn, off);
+                               update_global_button (Button::AudioInstruments, off); /* faking up Dyn */
+                               update_global_button (Button::Trim, off);
+                               update_global_button (Button::Send, off);
+                               update_global_button (Button::Pan, off);
+                               break;
+                       case MackieControlProtocol::Dynamics:
+                               update_global_button (Button::Eq, off);
+                               update_global_button (Button::Dyn, on);
+                               update_global_button (Button::AudioInstruments, on); /* faking up Dyn */
+                               update_global_button (Button::Trim, off);
+                               update_global_button (Button::Send, off);
+                               update_global_button (Button::Pan, off);
+                               break;
+                       }
+               }
+       }
+}
+
 void
 MackieControlProtocol::set_view_mode (ViewMode m)
 {
-       Glib::Threads::Mutex::Lock lm (surfaces_lock);
+       _last_bank[_view_mode] = _current_initial_bank;
 
        _view_mode = m;
+       set_subview_mode (None, boost::shared_ptr<Route>());
 
-       for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
-               (*s)->update_view_mode_display ();
-       }
+       switch_banks(_last_bank[_view_mode], true);
+       display_view_mode ();
+}
 
+void
+MackieControlProtocol::display_view_mode ()
+{
+       {
+               Glib::Threads::Mutex::Lock lm (surfaces_lock);
+
+               for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+                       (*s)->update_view_mode_display ();
+               }
+       }
 }
 
 void
 MackieControlProtocol::set_flip_mode (FlipMode fm)
 {
-       Glib::Threads::Mutex::Lock lm (surfaces_lock);
+       if (_flip_mode != fm) {
+               if (fm == Normal) {
+                       update_global_button (Button::Flip, off);
+               } else {
+                       update_global_button (Button::Flip, on);
+               }
 
-       _flip_mode = fm;
+               Glib::Threads::Mutex::Lock lm (surfaces_lock);
 
-       for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
-               (*s)->update_flip_mode_display ();
+               _flip_mode = fm;
+
+               for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+                       (*s)->update_flip_mode_display ();
+               }
        }
 }
 
 void
 MackieControlProtocol::set_pot_mode (PotMode m)
 {
-       Glib::Threads::Mutex::Lock lm (surfaces_lock);
+       // maybe not in flip mode.
+       if (flip_mode()) {
+               return;
+       }
 
        _pot_mode = m;
 
-       for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
-               (*s)->update_potmode ();
+       {
+               Glib::Threads::Mutex::Lock lm (surfaces_lock);
+
+               for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+                       (*s)->update_potmode ();
 
+               }
        }
 
+       pot_mode_globals ();
+}
+
+void
+MackieControlProtocol::pot_mode_globals ()
+{
+       update_global_button (Button::Eq, off);
+       update_global_button (Button::Dyn, off);
+       update_global_button (Button::AudioInstruments, off);
+
+       switch (_pot_mode) {
+       case Trim:
+               update_global_button (Button::Track, on);
+               update_global_button (Button::Send, off);
+               update_global_button (Button::Pan, off);
+               break;
+       case Send:
+               update_global_button (Button::Track, off);
+               update_global_button (Button::Send, on);
+               update_global_button (Button::Pan, off);
+               break;
+       case Pan:
+               update_global_button (Button::Track, off);
+               update_global_button (Button::Send, off);
+               update_global_button (Button::Pan, on);
+       };
 }
 
 void
@@ -1580,11 +1823,11 @@ MackieControlProtocol::force_special_route_to_strip (boost::shared_ptr<Route> r,
 void
 MackieControlProtocol::gui_track_selection_changed (ARDOUR::RouteNotificationListPtr rl, bool save_list)
 {
-       _gui_track_selection_changed (rl.get(), save_list);
+       _gui_track_selection_changed (rl.get(), save_list, true);
 }
 
 void
-MackieControlProtocol::_gui_track_selection_changed (ARDOUR::RouteNotificationList* rl, bool save_list)
+MackieControlProtocol::_gui_track_selection_changed (ARDOUR::RouteNotificationList* rl, bool save_list, bool gui_selection_did_change)
 {
        /* We need to keep a list of the most recently selected routes around,
           but we are not allowed to keep shared_ptr<Route> unless we want to
@@ -1615,6 +1858,11 @@ MackieControlProtocol::_gui_track_selection_changed (ARDOUR::RouteNotificationLi
        if (save_list) {
                _last_selected_routes = *rl;
        }
+
+       if (gui_selection_did_change) {
+               /* actual GUI selection changed */
+               set_subview_mode (_subview_mode, first_selected_route());
+       }
 }
 
 framepos_t
@@ -1937,3 +2185,69 @@ MackieControlProtocol::connection_handler (boost::weak_ptr<ARDOUR::Port> wp1, st
                }
        }
 }
+
+bool
+MackieControlProtocol::is_track (boost::shared_ptr<Route> r) const
+{
+       return boost::dynamic_pointer_cast<Track>(r) != 0;
+}
+
+bool
+MackieControlProtocol::is_audio_track (boost::shared_ptr<Route> r) const
+{
+       return boost::dynamic_pointer_cast<AudioTrack>(r) != 0;
+}
+
+bool
+MackieControlProtocol::is_midi_track (boost::shared_ptr<Route> r) const
+{
+       return boost::dynamic_pointer_cast<MidiTrack>(r) != 0;
+}
+
+bool
+MackieControlProtocol::selected (boost::shared_ptr<Route> r) const
+{
+       const RouteNotificationList* rl = &_last_selected_routes;
+
+       for (ARDOUR::RouteNotificationList::const_iterator i = rl->begin(); i != rl->end(); ++i) {
+               boost::shared_ptr<ARDOUR::Route> rt = (*i).lock();
+               if (rt == r) {
+                       return true;
+               }
+       }
+       return false;
+}
+
+boost::shared_ptr<Route>
+MackieControlProtocol::first_selected_route () const
+{
+       if (_last_selected_routes.empty()) {
+               return boost::shared_ptr<Route>();
+       }
+
+       boost::shared_ptr<Route> r = _last_selected_routes.front().lock();
+
+       return r; /* may be null */
+}
+
+boost::shared_ptr<Route>
+MackieControlProtocol::subview_route () const
+{
+       return _subview_route;
+}
+
+uint32_t
+MackieControlProtocol::global_index (Strip& strip)
+{
+       Glib::Threads::Mutex::Lock lm (surfaces_lock);
+       uint32_t global = 0;
+
+       for (Surfaces::const_iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+               if ((*s).get() == strip.surface()) {
+                       return global + strip.index();
+               }
+               global += (*s)->n_strips ();
+       }
+
+       return global;
+}