fix invalid mapping detection
[ardour.git] / libs / ardour / track.cc
index 92e51a42504090592646d03f7606f2c4630c18d7..f279eae3069cbab3dfcedad52c45868b2357c238 100644 (file)
@@ -46,8 +46,6 @@ Track::Track (Session& sess, string name, Route::Flag flag, TrackMode mode, Data
 {
        _freeze_record.state = NoFreeze;
         _declickable = true;
-
-       Config->ParameterChanged.connect_same_thread (*this, boost::bind (&Track::parameter_changed, this, _1));
 }
 
 Track::~Track ()
@@ -66,12 +64,15 @@ Track::init ()
        boost::shared_ptr<Track> rt = boost::dynamic_pointer_cast<Track> (rp);
        _rec_enable_control = boost::shared_ptr<RecEnableControl> (new RecEnableControl(rt));
        _rec_enable_control->set_flags (Controllable::Toggle);
+        _monitoring_control.reset (new MonitoringControllable (X_("monitoring"), rt));
 
        /* don't add rec_enable_control to controls because we don't want it to
         * appear as an automatable parameter
         */
+       track_number_changed.connect_same_thread (*this, boost::bind (&Track::resync_track_name, this));
+       _session.config.ParameterChanged.connect_same_thread (*this, boost::bind (&Track::parameter_changed, this, _1));
 
-        return 0;
+       return 0;
 }
 
 void
@@ -101,21 +102,8 @@ Track::state (bool full)
        root.add_child_nocopy (_rec_enable_control->get_state());
        root.add_child_nocopy (_diskstream->get_state ());
 
-       if (!_deactivated_processors.empty ()) {
-               XMLNode* node = new XMLNode (X_("DeactivatedProcessors"));
-               for (list<boost::weak_ptr<Processor> >::iterator i = _deactivated_processors.begin(); i != _deactivated_processors.end(); ++i) {
-                       boost::shared_ptr<Processor> p = i->lock ();
-                       if (p) {
-                               XMLNode* c = new XMLNode (X_("Processor"));
-                               c->add_property (X_("id"), p->id().to_s());
-                               node->add_child_nocopy (*c);
-                       }
-               }
-               root.add_child_nocopy (*node);
-       }
-       
        return root;
-}      
+}
 
 int
 Track::set_state (const XMLNode& node, int version)
@@ -152,20 +140,8 @@ Track::set_state (const XMLNode& node, int version)
                                _rec_enable_control->set_state (*child, version);
                        }
                }
-
-               if (child->name() == X_("DeactivatedProcessors")) {
-                       XMLNodeList dp = child->children ();
-                       for (XMLNodeConstIterator i = dp.begin(); i != dp.end(); ++i) {
-                               assert ((*i)->name() == X_("Processor"));
-                               XMLProperty* prop = (*i)->property (X_("id"));
-                               boost::shared_ptr<Processor> p = processor_by_id (PBD::ID (prop->value ()));
-                               if (p) {
-                                       _deactivated_processors.push_back (p);
-                               }
-                       }
-               }
        }
-       
+
        const XMLProperty* prop;
 
        if ((prop = node.property (X_("monitoring"))) != 0) {
@@ -203,7 +179,11 @@ Track::freeze_state() const
 }
 
 Track::RecEnableControl::RecEnableControl (boost::shared_ptr<Track> t)
-       : AutomationControl (t->session(), RecEnableAutomation, boost::shared_ptr<AutomationList>(), X_("recenable"))
+       : AutomationControl (t->session(),
+                            RecEnableAutomation,
+                            ParameterDescriptor(Evoral::Parameter(RecEnableAutomation)),
+                            boost::shared_ptr<AutomationList>(),
+                            X_("recenable"))
        , track (t)
 {
        boost::shared_ptr<AutomationList> gl(new AutomationList(Evoral::Parameter(RecEnableAutomation)));
@@ -211,14 +191,30 @@ Track::RecEnableControl::RecEnableControl (boost::shared_ptr<Track> t)
 }
 
 void
-Track::RecEnableControl::set_value (double val)
+Track::RecEnableControl::set_value (double val, Controllable::GroupControlDisposition group_override)
+{
+       if (writable()) {
+               _set_value (val, group_override);
+       }
+}
+
+void
+Track::RecEnableControl::set_value_unchecked (double val)
+{
+       if (writable()) {
+               _set_value (val, Controllable::NoGroup);
+       }
+}
+
+void
+Track::RecEnableControl::_set_value (double val, Controllable::GroupControlDisposition group_override)
 {
        boost::shared_ptr<Track> t = track.lock ();
        if (!t) {
                return;
        }
-       
-       t->set_record_enabled (val >= 0.5 ? true : false, this);
+
+       t->set_record_enabled (val >= 0.5 ? true : false, group_override);
 }
 
 double
@@ -228,7 +224,7 @@ Track::RecEnableControl::get_value () const
        if (!t) {
                return 0;
        }
-       
+
        return (t->record_enabled() ? 1.0 : 0.0);
 }
 
@@ -250,36 +246,13 @@ Track::can_record()
        return will_record;
 }
 
-/* Turn off visible processors (except Fader), keeping track of the old states */
 void
-Track::deactivate_visible_processors ()
+Track::prep_record_enabled (bool yn, Controllable::GroupControlDisposition group_override)
 {
-       _deactivated_processors.clear ();
-       Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
-       
-       for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
-               if ((*i)->active() && (*i)->display_to_user() && boost::dynamic_pointer_cast<Amp> (*i) == 0) {
-                       (*i)->deactivate ();
-                       _deactivated_processors.push_back (*i);
-               }
+       if (yn && record_safe ()) {
+           return;
        }
-}
 
-/* Turn deactivated processors back on again */
-void
-Track::activate_deactivated_processors ()
-{
-       for (list<boost::weak_ptr<Processor> >::iterator i = _deactivated_processors.begin(); i != _deactivated_processors.end(); ++i) {
-               boost::shared_ptr<Processor> p = i->lock ();
-               if (p) {
-                       p->activate ();
-               }
-       }
-}
-
-void
-Track::set_record_enabled (bool yn, void *src)
-{
        if (!_session.writable()) {
                return;
        }
@@ -288,8 +261,8 @@ Track::set_record_enabled (bool yn, void *src)
                return;
        }
 
-       if (_route_group && src != _route_group && _route_group->is_active() && _route_group->is_recenable()) {
-               _route_group->apply (&Track::set_record_enabled, yn, _route_group);
+       if (use_group (group_override, &RouteGroup::is_recenable)) {
+               _route_group->apply (&Track::prep_record_enabled, yn, Controllable::NoGroup);
                return;
        }
 
@@ -298,27 +271,96 @@ Track::set_record_enabled (bool yn, void *src)
                _saved_meter_point = _meter_point;
        }
 
-       if (Config->get_do_not_record_plugins ()) {
+       bool will_follow;
+
+       if (yn) {
+               will_follow = _diskstream->prep_record_enable ();
+       } else {
+               will_follow = _diskstream->prep_record_disable ();
+       }
+
+       if (will_follow) {
                if (yn) {
-                       deactivate_visible_processors ();
+                       if (_meter_point != MeterCustom) {
+                               set_meter_point (MeterInput);
+                       }
                } else {
-                       activate_deactivated_processors ();
+                       set_meter_point (_saved_meter_point);
                }
        }
+}
 
-       _diskstream->set_record_enabled (yn);
+void
+Track::set_record_enabled (bool yn, Controllable::GroupControlDisposition group_override)
+{
+       if (_diskstream->record_safe ()) {
+           return;
+       }
 
-       if (_diskstream->record_enabled()) {
-               if (_meter_point != MeterCustom) {
-                       set_meter_point (MeterInput);
-               }
-       } else {
-               set_meter_point (_saved_meter_point);
+       if (!_session.writable()) {
+               return;
        }
 
+       if (_freeze_record.state == Frozen) {
+               return;
+       }
+
+       if (use_group (group_override, &RouteGroup::is_recenable)) {
+               _route_group->apply (&Track::set_record_enabled, yn, Controllable::NoGroup);
+               return;
+       }
+
+       _diskstream->set_record_enabled (yn);
+
        _rec_enable_control->Changed ();
 }
 
+bool
+Track::record_safe () const
+{
+       return _diskstream && _diskstream->record_safe ();
+}
+
+void
+Track::set_record_safe (bool yn, Controllable::GroupControlDisposition group_override)
+{
+       if (!_session.writable()) {
+               return;
+       }
+
+       if (_freeze_record.state == Frozen) {
+               return;
+       }
+
+       if (use_group (group_override, &RouteGroup::is_recenable)) {
+               _route_group->apply (&Track::set_record_safe, yn, Controllable::NoGroup);
+               return;
+       }
+
+       _diskstream->set_record_safe (yn);
+}
+
+void
+Track::parameter_changed (string const & p)
+{
+       if (p == "track-name-number") {
+               resync_track_name ();
+       }
+       else if (p == "track-name-take") {
+               resync_track_name ();
+       }
+       else if (p == "take-name") {
+               if (_session.config.get_track_name_take()) {
+                       resync_track_name ();
+               }
+       }
+}
+
+void
+Track::resync_track_name ()
+{
+       set_name(name());
+}
 
 bool
 Track::set_name (const string& str)
@@ -330,6 +372,29 @@ Track::set_name (const string& str)
                return false;
        }
 
+       string diskstream_name = "";
+       if (_session.config.get_track_name_take () && !_session.config.get_take_name ().empty()) {
+               // Note: any text is fine, legalize_for_path() fixes this later
+               diskstream_name += _session.config.get_take_name ();
+               diskstream_name += "_";
+       }
+       const int64_t tracknumber = track_number();
+       if (tracknumber > 0 && _session.config.get_track_name_number()) {
+               char num[64], fmt[10];
+               snprintf(fmt, sizeof(fmt), "%%0%d" PRId64, _session.track_number_decimals());
+               snprintf(num, sizeof(num), fmt, tracknumber);
+               diskstream_name += num;
+               diskstream_name += "_";
+       }
+       diskstream_name += str;
+
+       if (diskstream_name == _diskstream_name) {
+               return true;
+       }
+       _diskstream_name = diskstream_name;
+
+       _diskstream->set_write_source_name (diskstream_name);
+
        boost::shared_ptr<Track> me = boost::dynamic_pointer_cast<Track> (shared_from_this ());
        if (_diskstream->playlist()->all_regions_empty () && _session.playlists->playlists_for_track (me).size() == 1) {
                /* Only rename the diskstream (and therefore the playlist) if
@@ -366,18 +431,26 @@ int
 Track::no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame, bool session_state_changing)
 {
        Glib::Threads::RWLock::ReaderLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
+
        if (!lm.locked()) {
                return 0;
        }
 
        bool can_record = _session.actively_recording ();
 
+       /* no outputs? nothing to do ... what happens if we have sends etc. ? */
+
        if (n_outputs().n_total() == 0) {
                return 0;
        }
 
+       /* not active ... do the minimum possible by just outputting silence */
+
        if (!_active) {
                silence (nframes);
+               if (_meter_point == MeterInput && (_monitoring & MonitorInput || _diskstream->record_enabled())) {
+                       _meter->reset();
+               }
                return 0;
        }
 
@@ -400,39 +473,86 @@ Track::no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame,
 
        bool be_silent;
 
-       if (_have_internal_generator) {
-               /* since the instrument has no input streams,
-                  there is no reason to send any signal
-                  into the route.
-               */
+       MonitorState const s = monitoring_state ();
+       /* we are not rolling, so be silent even if we are monitoring disk, as there
+          will be no disk data coming in.
+       */
+       switch (s) {
+       case MonitoringSilence:
                be_silent = true;
-       } else {
-               MonitorState const s = monitoring_state ();
-               /* we are not rolling, so be silent even if we are monitoring disk, as there
-                  will be no disk data coming in.
-               */
-                be_silent = (s == MonitoringSilence || s == MonitoringDisk);
+               break;
+       case MonitoringDisk:
+               be_silent = true;
+               break;
+       case MonitoringInput:
+               be_silent = false;
+               break;
+       default:
+               be_silent = false;
+               break;
        }
-       
-       if (!_have_internal_generator && metering_state() == MeteringInput) {
-               _input->process_input (_meter, start_frame, end_frame, nframes);
+
+       //if we have an internal generator, let it play regardless of monitoring state
+       if (_have_internal_generator) {
+               be_silent = false;
        }
 
-       _amp->apply_gain_automation(false);
+       _amp->apply_gain_automation (false);
 
        /* if have_internal_generator, or .. */
-       //_input->process_input (_meter, start_frame, end_frame, nframes);
 
        if (be_silent) {
 
+               if (_meter_point == MeterInput) {
+                       /* still need input monitoring and metering */
+
+                       bool const track_rec = _diskstream->record_enabled ();
+                       bool const auto_input = _session.config.get_auto_input ();
+                       bool const software_monitor = Config->get_monitoring_model() == SoftwareMonitoring;
+                       bool const tape_machine_mode = Config->get_tape_machine_mode ();
+                       bool no_meter = false;
+
+                       /* this needs a proper K-map
+                        * and should be separated into a function similar to monitoring_state()
+                        * that also handles roll() states in audio_track.cc, midi_track.cc and route.cc
+                        *
+                        * see http://www.oofus.co.uk/ardour/Ardour3MonitorModesV3.pdf
+                        */
+                       if (!auto_input && !track_rec) {
+                               no_meter=true;
+                       }
+                       else if (tape_machine_mode && !track_rec && auto_input) {
+                               no_meter=true;
+                       }
+                       else if (!software_monitor && tape_machine_mode && !track_rec) {
+                               no_meter=true;
+                       }
+                       else if (!software_monitor && !tape_machine_mode && !track_rec && !auto_input) {
+                               no_meter=true;
+                       }
+
+                       if (no_meter) {
+                               BufferSet& bufs (_session.get_silent_buffers (n_process_buffers()));
+                               _meter->run (bufs, 0, 0, nframes, true);
+                               _input->process_input (boost::shared_ptr<Processor>(), start_frame, end_frame, nframes);
+                       } else {
+                               _input->process_input (_meter, start_frame, end_frame, nframes);
+                       }
+               }
+
                passthru_silence (start_frame, end_frame, nframes, 0);
 
        } else {
 
-               /* we're sending signal, but we may still want to meter the input.
-                */
+               BufferSet& bufs = _session.get_route_buffers (n_process_buffers());
 
-               passthru (start_frame, end_frame, nframes, false);
+               fill_buffers_with_input (bufs, _input, nframes);
+
+               if (_meter_point == MeterInput) {
+                       _meter->run (bufs, start_frame, end_frame, nframes, true);
+               }
+
+               passthru (bufs, start_frame, end_frame, nframes, false);
        }
 
        for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
@@ -450,6 +570,10 @@ Track::silent_roll (pframes_t nframes, framepos_t /*start_frame*/, framepos_t /*
 {
        Glib::Threads::RWLock::ReaderLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
        if (!lm.locked()) {
+               framecnt_t playback_distance = _diskstream->calculate_playback_distance(nframes);
+               if (can_internal_playback_seek(playback_distance)) {
+                       internal_playback_seek(playback_distance);
+               }
                return 0;
        }
 
@@ -468,7 +592,10 @@ Track::silent_roll (pframes_t nframes, framepos_t /*start_frame*/, framepos_t /*
        silence (nframes);
 
        framecnt_t playback_distance;
-       int const dret = _diskstream->process (_session.transport_frame(), nframes, playback_distance);
+
+       BufferSet& bufs (_session.get_route_buffers (n_process_buffers(), true));
+
+       int const dret = _diskstream->process (bufs, _session.transport_frame(), nframes, playback_distance, false);
        need_butler = _diskstream->commit (playback_distance);
        return dret;
 }
@@ -481,6 +608,7 @@ Track::set_diskstream (boost::shared_ptr<Diskstream> ds)
        ds->PlaylistChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_playlist_changed, this));
        diskstream_playlist_changed ();
        ds->RecordEnableChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_record_enable_changed, this));
+       ds->RecordSafeChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_record_safe_changed, this));
        ds->SpeedChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_speed_changed, this));
        ds->AlignmentStyleChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_alignment_style_changed, this));
 }
@@ -497,6 +625,12 @@ Track::diskstream_record_enable_changed ()
        RecordEnableChanged (); /* EMIT SIGNAL */
 }
 
+void
+Track::diskstream_record_safe_changed ()
+{
+       RecordSafeChanged (); /* EMIT SIGNAL */
+}
+
 void
 Track::diskstream_speed_changed ()
 {
@@ -516,15 +650,15 @@ Track::playlist ()
 }
 
 void
-Track::request_jack_monitors_input (bool m)
+Track::request_input_monitoring (bool m)
 {
-       _diskstream->request_jack_monitors_input (m);
+       _diskstream->request_input_monitoring (m);
 }
 
 void
-Track::ensure_jack_monitors_input (bool m)
+Track::ensure_input_monitoring (bool m)
 {
-       _diskstream->ensure_jack_monitors_input (m);
+       _diskstream->ensure_input_monitoring (m);
 }
 
 bool
@@ -545,10 +679,10 @@ Track::set_capture_offset ()
        _diskstream->set_capture_offset ();
 }
 
-list<boost::shared_ptr<Source> >
-Track::steal_write_sources()
+std::string
+Track::steal_write_source_name()
 {
-        return _diskstream->steal_write_sources ();
+        return _diskstream->steal_write_source_name ();
 }
 
 void
@@ -685,9 +819,9 @@ Track::speed () const
 }
 
 void
-Track::prepare_to_stop (framepos_t p)
+Track::prepare_to_stop (framepos_t t, framepos_t a)
 {
-       _diskstream->prepare_to_stop (p);
+       _diskstream->prepare_to_stop (t, a);
 }
 
 void
@@ -813,15 +947,74 @@ Track::adjust_capture_buffering ()
         }
 }
 
+#ifdef USE_TRACKS_CODE_FEATURES
+
+/* This is the Tracks version of Track::monitoring_state().
+ *
+ * Ardour developers: try to flag or fix issues if parts of the libardour API
+ * change in ways that invalidate this
+ */
+
 MonitorState
 Track::monitoring_state () const
 {
        /* Explicit requests */
-       
+
        if (_monitoring & MonitorInput) {
                return MonitoringInput;
        }
-               
+
+       if (_monitoring & MonitorDisk) {
+               return MonitoringDisk;
+       }
+
+       /* This is an implementation of the truth table in doc/monitor_modes.pdf;
+          I don't think it's ever going to be too pretty too look at.
+       */
+
+       // GZ: NOT USED IN TRACKS
+       //bool const auto_input = _session.config.get_auto_input ();
+       //bool const software_monitor = Config->get_monitoring_model() == SoftwareMonitoring;
+       //bool const tape_machine_mode = Config->get_tape_machine_mode ();
+
+       bool const roll = _session.transport_rolling ();
+       bool const track_rec = _diskstream->record_enabled ();
+       bool session_rec = _session.actively_recording ();
+
+       if (track_rec) {
+
+               if (!session_rec && roll) {
+                       return MonitoringDisk;
+               } else {
+                       return MonitoringInput;
+               }
+
+       } else {
+
+               if (roll) {
+                       return MonitoringDisk;
+               }
+       }
+
+       return MonitoringSilence;
+}
+
+#else
+
+/* This is the Ardour/Mixbus version of Track::monitoring_state().
+ *
+ * Tracks developers: do NOT modify this method under any circumstances.
+ */
+
+MonitorState
+Track::monitoring_state () const
+{
+       /* Explicit requests */
+
+       if (_monitoring & MonitorInput) {
+               return MonitoringInput;
+       }
+
        if (_monitoring & MonitorDisk) {
                return MonitoringDisk;
        }
@@ -832,10 +1025,22 @@ Track::monitoring_state () const
 
        bool const roll = _session.transport_rolling ();
        bool const track_rec = _diskstream->record_enabled ();
-       bool const session_rec = _session.get_record_enabled ();
        bool const auto_input = _session.config.get_auto_input ();
        bool const software_monitor = Config->get_monitoring_model() == SoftwareMonitoring;
        bool const tape_machine_mode = Config->get_tape_machine_mode ();
+       bool session_rec;
+
+       /* I suspect that just use actively_recording() is good enough all the
+        * time, but just to keep the semantics the same as they were before
+        * sept 26th 2012, we differentiate between the cases where punch is
+        * enabled and those where it is not.
+        */
+
+       if (_session.config.get_punch_in() || _session.config.get_punch_out()) {
+               session_rec = _session.actively_recording ();
+       } else {
+               session_rec = _session.get_record_enabled();
+       }
 
        if (track_rec) {
 
@@ -858,14 +1063,16 @@ Track::monitoring_state () const
                        } else {
                                return MonitoringDisk;
                        }
-                       
+
                }
        }
 
-       /* NOTREACHED */
+       abort(); /* NOTREACHED */
        return MonitoringSilence;
 }
 
+#endif
+
 void
 Track::maybe_declick (BufferSet& bufs, framecnt_t nframes, int declick)
 {
@@ -921,12 +1128,17 @@ Track::check_initial_delay (framecnt_t nframes, framepos_t& transport_frame)
 
        }
 
-       return nframes; 
+       return nframes;
 }
 
 void
-Track::set_monitoring (MonitorChoice mc)
+Track::set_monitoring (MonitorChoice mc, Controllable::GroupControlDisposition gcd)
 {
+       if (use_group (gcd, &RouteGroup::is_monitoring)) {
+               _route_group->apply (&Track::set_monitoring, mc, Controllable::NoGroup);
+               return;
+       }
+
        if (mc !=  _monitoring) {
                _monitoring = mc;
 
@@ -935,27 +1147,74 @@ Track::set_monitoring (MonitorChoice mc)
                }
 
                MonitoringChanged (); /* EMIT SIGNAL */
+               _monitoring_control->Changed (); /* EMIT SIGNAL */
        }
 }
 
+MeterState
+Track::metering_state () const
+{
+       bool rv;
+       if (_session.transport_rolling ()) {
+               // audio_track.cc || midi_track.cc roll() runs meter IFF:
+               rv = _meter_point == MeterInput && (_monitoring & MonitorInput || _diskstream->record_enabled());
+       } else {
+               // track no_roll() always metering if
+               rv = _meter_point == MeterInput;
+       }
+       return rv ? MeteringInput : MeteringRoute;
+}
+
+Track::MonitoringControllable::MonitoringControllable (std::string name, boost::shared_ptr<Track> r)
+       : RouteAutomationControl (name, MonitoringAutomation, boost::shared_ptr<AutomationList>(), r)
+{
+       boost::shared_ptr<AutomationList> gl(new AutomationList(Evoral::Parameter(MonitoringAutomation)));
+       gl->set_interpolation(Evoral::ControlList::Discrete);
+       set_list (gl);
+}
+
+void
+Track::MonitoringControllable::set_value (double val, Controllable::GroupControlDisposition gcd)
+{
+       _set_value (val, gcd);
+}
+
 void
-Track::parameter_changed (string p)
+Track::MonitoringControllable::_set_value (double val, Controllable::GroupControlDisposition gcd)
 {
-       if (p != "do-not-record-plugins") {
+       boost::shared_ptr<Route> r = _route.lock();
+       if (!r) {
                return;
        }
 
-       if (record_enabled ()) {
-               if (Config->get_do_not_record_plugins ()) {
-                       deactivate_visible_processors ();
-               } else {
-                       activate_deactivated_processors ();
-               }
+       boost::shared_ptr<Track> t = boost::dynamic_pointer_cast<Track> (r);
+       if (!t) {
+               return;
+       }
+
+       int mc = (int) val;
+
+       if (mc < MonitorAuto || mc > MonitorDisk) {
+               return;
        }
+
+       /* no group effect at present */
+
+       t->set_monitoring ((MonitorChoice) mc, gcd);
 }
-       
-MeterState
-Track::metering_state () const
+
+double
+Track::MonitoringControllable::get_value () const
 {
-       return _diskstream->record_enabled() ? MeteringInput : MeteringRoute;
+       boost::shared_ptr<Route> r = _route.lock();
+       if (!r) {
+               return 0.0;
+       }
+
+       boost::shared_ptr<Track> t = boost::dynamic_pointer_cast<Track> (r);
+       if (!t) {
+               return 0.0;
+       }
+
+       return t->monitoring_choice();
 }