a few more if (_mmc) tests
[ardour.git] / libs / ardour / session.cc
index f0aaf054ffa66b9e3e270d6346f70e0a1310ad45..ea48f9c60fbb7a9f22cde0dee50a26aa77b2681c 100644 (file)
 #include "ardour/tape_file_matcher.h"
 #include "ardour/tempo.h"
 #include "ardour/utils.h"
+#include "ardour/graph.h"
 
 #include "midi++/jack.h"
+#include "midi++/mmc.h"
 
 #include "i18n.h"
 
@@ -134,8 +136,7 @@ Session::Session (AudioEngine &eng,
        : _engine (eng),
          _target_transport_speed (0.0),
          _requested_return_frame (-1),
-         mmc (0),
-         _mmc_port (default_mmc_port),
+         _mmc (0),
          _mtc_port (default_mtc_port),
          _midi_port (default_midi_port),
          _midi_clock_port (default_midi_clock_port),
@@ -144,6 +145,7 @@ Session::Session (AudioEngine &eng,
          _butler (new Butler (*this)),
          _post_transport_work (0),
          _send_timecode_update (false),
+         route_graph (new Graph(*this)),
          routes (new RouteList),
          _total_free_4k_blocks (0),
          _bundles (new BundleList),
@@ -172,7 +174,7 @@ Session::Session (AudioEngine &eng,
         _is_new = !Glib::file_test (_path, Glib::FileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR));
 
        if (_is_new) {
-               if (create (mix_template, compute_initial_length(), bus_profile)) {
+               if (create (mix_template, bus_profile)) {
                        destroy ();
                        throw failed_constructor ();
                }
@@ -303,7 +305,7 @@ Session::destroy ()
 
        Crossfade::set_buffer_size (0);
 
-       delete mmc;
+       delete _mmc;
 
        /* not strictly necessary, but doing it here allows the shared_ptr debugging to work */
        playlists.reset ();
@@ -439,7 +441,7 @@ Session::when_engine_running ()
                snprintf (buf, sizeof (buf), _("out %" PRIu32), np+1);
 
                shared_ptr<Bundle> c (new Bundle (buf, true));
-               c->add_channel (_("mono"));
+               c->add_channel (_("mono"), DataType::AUDIO);
                c->set_port (0, _engine.get_nth_physical_output (DataType::AUDIO, np));
 
                add_bundle (c);
@@ -452,9 +454,9 @@ Session::when_engine_running ()
                        char buf[32];
                        snprintf (buf, sizeof(buf), _("out %" PRIu32 "+%" PRIu32), np + 1, np + 2);
                        shared_ptr<Bundle> c (new Bundle (buf, true));
-                       c->add_channel (_("L"));
+                       c->add_channel (_("L"), DataType::AUDIO);
                        c->set_port (0, _engine.get_nth_physical_output (DataType::AUDIO, np));
-                       c->add_channel (_("R"));
+                       c->add_channel (_("R"), DataType::AUDIO);
                        c->set_port (1, _engine.get_nth_physical_output (DataType::AUDIO, np + 1));
 
                        add_bundle (c);
@@ -468,7 +470,7 @@ Session::when_engine_running ()
                snprintf (buf, sizeof (buf), _("in %" PRIu32), np+1);
 
                shared_ptr<Bundle> c (new Bundle (buf, false));
-               c->add_channel (_("mono"));
+               c->add_channel (_("mono"), DataType::AUDIO);
                c->set_port (0, _engine.get_nth_physical_input (DataType::AUDIO, np));
 
                add_bundle (c);
@@ -482,9 +484,9 @@ Session::when_engine_running ()
                        snprintf (buf, sizeof(buf), _("in %" PRIu32 "+%" PRIu32), np + 1, np + 2);
 
                        shared_ptr<Bundle> c (new Bundle (buf, false));
-                       c->add_channel (_("L"));
+                       c->add_channel (_("L"), DataType::AUDIO);
                        c->set_port (0, _engine.get_nth_physical_input (DataType::AUDIO, np));
-                       c->add_channel (_("R"));
+                       c->add_channel (_("R"), DataType::AUDIO);
                        c->set_port (1, _engine.get_nth_physical_input (DataType::AUDIO, np + 1));
 
                        add_bundle (c);
@@ -700,13 +702,7 @@ Session::hookup_io ()
 void
 Session::playlist_length_changed ()
 {
-       /* we can't just increase session_range_location->end() if pl->get_maximum_extent()
-          if larger. if the playlist used to be the longest playlist,
-          and its now shorter, we have to decrease session_range_location->end(). hence,
-          we have to iterate over all diskstreams and check the
-          playlists currently in use.
-       */
-       find_current_end ();
+       update_session_range_location_marker ();
 }
 
 void
@@ -723,8 +719,7 @@ Session::track_playlist_changed (boost::weak_ptr<Track> wp)
                playlist->LengthChanged.connect_same_thread (*this, boost::bind (&Session::playlist_length_changed, this));
        }
 
-       /* see comment in playlist_length_changed () */
-       find_current_end ();
+       update_session_range_location_marker ();
 }
 
 bool
@@ -966,7 +961,9 @@ Session::enable_record ()
        if (g_atomic_int_get (&_record_status) != Recording) {
                g_atomic_int_set (&_record_status, Recording);
                _last_record_location = _transport_frame;
-               deliver_mmc(MIDI::MachineControl::cmdRecordStrobe, _last_record_location);
+                if (_mmc) {
+                        _mmc->send (MIDI::MachineControlCommand (MIDI::MachineControl::cmdRecordStrobe));
+                }
 
                if (Config->get_monitoring_model() == HardwareMonitoring && config.get_auto_input()) {
                        
@@ -992,19 +989,15 @@ Session::disable_record (bool rt_context, bool force)
 
                if ((!Config->get_latched_record_enable () && !play_loop) || force) {
                        g_atomic_int_set (&_record_status, Disabled);
+                        if (_mmc) {
+                                _mmc->send (MIDI::MachineControlCommand (MIDI::MachineControl::cmdRecordExit));
+                        }
                } else {
                        if (rs == Recording) {
                                g_atomic_int_set (&_record_status, Enabled);
                        }
                }
 
-               // FIXME: timestamp correct? [DR]
-               // FIXME FIXME FIXME: rt_context?  this must be called in the process thread.
-               // does this /need/ to be sent in all cases?
-               if (rt_context) {
-                       deliver_mmc (MIDI::MachineControl::cmdRecordExit, _transport_frame);
-               }
-
                if (Config->get_monitoring_model() == HardwareMonitoring && config.get_auto_input()) {
 
                        boost::shared_ptr<RouteList> rl = routes.reader ();
@@ -1058,7 +1051,9 @@ Session::maybe_enable_record ()
                        enable_record ();
                }
        } else {
-               deliver_mmc (MIDI::MachineControl::cmdRecordPause, _transport_frame);
+                if (_mmc) {
+                        _mmc->send (MIDI::MachineControlCommand (MIDI::MachineControl::cmdRecordPause));
+                }
                RecordStateChanged (); /* EMIT SIGNAL */
        }
 
@@ -1322,15 +1317,15 @@ Session::resort_routes ()
                return;
        }
 
-
        {
-
                RCUWriter<RouteList> writer (routes);
                shared_ptr<RouteList> r = writer.get_copy ();
                resort_routes_using (r);
                /* writer goes out of scope and forces update */
        }
 
+       //route_graph->dump(1);
+
 #ifndef NDEBUG
         boost::shared_ptr<RouteList> rl = routes.reader ();
         for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
@@ -1384,6 +1379,8 @@ Session::resort_routes_using (shared_ptr<RouteList> r)
        RouteSorter cmp;
        r->sort (cmp);
 
+       route_graph->rechain (r);
+
 #ifndef NDEBUG
         DEBUG_TRACE (DEBUG::Graph, "Routes resorted, order follows:\n");
        for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
@@ -1457,7 +1454,7 @@ Session::new_midi_track (TrackMode mode, RouteGroup* route_group, uint32_t how_m
                }
 
                shared_ptr<MidiTrack> track;
-
+                
                try {
                        MidiTrack* mt = new MidiTrack (*this, track_name, Route::Flag (0), mode);
 
@@ -1485,6 +1482,7 @@ Session::new_midi_track (TrackMode mode, RouteGroup* route_group, uint32_t how_m
                        auto_connect_route (track, existing_inputs, existing_outputs);
 
                        track->non_realtime_input_change();
+
                        if (route_group) {
                                route_group->add (track);
                        }
@@ -1542,9 +1540,6 @@ Session::auto_connect_route (boost::shared_ptr<Route> route,
                ? ChanCount::max(existing_inputs, existing_outputs)
                : existing_outputs;
 
-       static string empty_string;
-       string& port = empty_string;
-
        for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
                vector<string> physinputs;
                vector<string> physoutputs;
@@ -1555,7 +1550,7 @@ Session::auto_connect_route (boost::shared_ptr<Route> route,
                if (!physinputs.empty()) {
                        uint32_t nphysical_in = physinputs.size();
                        for (uint32_t i = 0; i < route->n_inputs().get(*t) && i < nphysical_in; ++i) {
-                               port = empty_string;
+                               string port;
 
                                if (Config->get_input_auto_connect() & AutoConnectPhysical) {
                                        port = physinputs[(in_offset.get(*t) + i) % nphysical_in];
@@ -1571,7 +1566,7 @@ Session::auto_connect_route (boost::shared_ptr<Route> route,
                if (!physoutputs.empty()) {
                        uint32_t nphysical_out = physoutputs.size();
                        for (uint32_t i = 0; i < route->n_outputs().get(*t); ++i) {
-                               port = empty_string;
+                               string port;
 
                                if (Config->get_output_auto_connect() & AutoConnectPhysical) {
                                        port = physoutputs[(out_offset.get(*t) + i) % nphysical_out];
@@ -1828,13 +1823,19 @@ Session::new_route_from_template (uint32_t how_many, const std::string& template
                        /*NOTREACHED*/
                }
 
-               IO::set_name_in_state (*node_copy.children().front(), name);
+               /* set IO children to use the new name */
+               XMLNodeList const & children = node_copy.children ();
+               for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
+                       if ((*i)->name() == IO::state_node_name) {
+                               IO::set_name_in_state (**i, name);
+                       }
+               }
 
                Track::zero_diskstream_id_in_xml (node_copy);
 
                try {
                        shared_ptr<Route> route (XMLRouteFactory (node_copy, 3000));
-           
+
                        if (route == 0) {
                                error << _("Session: cannot create track/bus from template description") << endmsg;
                                goto out;
@@ -2046,6 +2047,10 @@ Session::add_internal_sends (boost::shared_ptr<Route> dest, Placement p, boost::
 void
 Session::remove_route (shared_ptr<Route> route)
 {
+        if (((route == _master_out) || (route == _monitor_out)) && !Config->get_allow_special_bus_removal()) {
+                return;
+        }
+
        {
                RCUWriter<RouteList> writer (routes);
                shared_ptr<RouteList> rs = writer.get_copy ();
@@ -2074,9 +2079,9 @@ Session::remove_route (shared_ptr<Route> route)
 
                /* writer goes out of scope, forces route list update */
        }
-        
+
         update_route_solo_state ();
-       find_current_end ();
+       update_session_range_location_marker ();
 
        // We need to disconnect the route's inputs and outputs
 
@@ -2098,6 +2103,11 @@ Session::remove_route (shared_ptr<Route> route)
        update_latency_compensation (false, false);
        set_dirty();
 
+        /* flush references out of the graph
+         */
+
+        route_graph->clear_other_chain ();
+
        /* get rid of it from the dead wood collection in the route list manager */
 
        /* XXX i think this is unsafe as it currently stands, but i am not sure. (pd, october 2nd, 2006) */
@@ -2390,43 +2400,64 @@ Session::route_by_remote_id (uint32_t id)
        return shared_ptr<Route> ((Route*) 0);
 }
 
+/** If either end of the session range location marker lies inside the current
+ *  session extent, move it to the corresponding session extent.
+ */
 void
-Session::find_current_end ()
+Session::update_session_range_location_marker ()
 {
        if (_state_of_the_state & Loading) {
                return;
        }
 
-       nframes_t max = get_maximum_extent ();
+       pair<nframes_t, nframes_t> const ext = get_extent ();
 
-       if (max > _session_range_location->end()) {
-               _session_range_location->set_end (max);
-               set_dirty();
-               DurationChanged(); /* EMIT SIGNAL */
+       if (_session_range_location == 0) {
+               /* we don't have a session range yet; use this one (provided it is valid) */
+               if (ext.first != max_frames) {
+                       add_session_range_location (ext.first, ext.second);
+               }
+       } else {
+               /* update the existing session range */
+               if (ext.first < _session_range_location->start()) {
+                       _session_range_location->set_start (ext.first);
+                       set_dirty ();
+               }
+               
+               if (ext.second > _session_range_location->end()) {
+                       _session_range_location->set_end (ext.second);
+                       set_dirty ();
+               }
+               
        }
 }
 
-nframes_t
-Session::get_maximum_extent () const
+/** @return Extent of the session's contents; if the session is empty, the first value of
+ *  the pair will equal max_frames.
+ */
+pair<nframes_t, nframes_t>
+Session::get_extent () const
 {
-       nframes_t max = 0;
-       nframes_t me;
+       pair<nframes_t, nframes_t> ext (max_frames, 0);
        
        boost::shared_ptr<RouteList> rl = routes.reader ();
        for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
                boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
                if (!tr || tr->destructive()) {
-                       //ignore tape tracks when getting max extents
+                       // ignore tape tracks when getting extents
                        continue;
                }
-               
-               boost::shared_ptr<Playlist> pl = tr->playlist();
-               if ((me = pl->get_maximum_extent()) > max) {
-                       max = me;
+
+               pair<nframes_t, nframes_t> e = tr->playlist()->get_extent ();
+               if (e.first < ext.first) {
+                       ext.first = e.first;
+               }
+               if (e.second > ext.second) {
+                       ext.second = e.second;
                }
        }
 
-       return max;
+       return ext;
 }
 
 /* Region management */
@@ -2456,46 +2487,58 @@ Session::find_whole_file_parent (boost::shared_ptr<Region const> child) const
 }
 
 int
-Session::destroy_region (boost::shared_ptr<Region> region)
+Session::destroy_sources (list<boost::shared_ptr<Source> > srcs)
 {
-       vector<boost::shared_ptr<Source> > srcs;
-
-       {
-               if (region->playlist()) {
-                       region->playlist()->destroy_region (region);
-               }
+        set<boost::shared_ptr<Region> > relevant_regions;
 
-               for (uint32_t n = 0; n < region->n_channels(); ++n) {
-                       srcs.push_back (region->source (n));
-               }
+       for (list<boost::shared_ptr<Source> >::iterator s = srcs.begin(); s != srcs.end(); ++s) {
+                RegionFactory::get_regions_using_source (*s, relevant_regions);
        }
 
-       region->drop_references ();
+        cerr << "There are " << relevant_regions.size() << " using " << srcs.size() << " sources" << endl;
+
+        for (set<boost::shared_ptr<Region> >::iterator r = relevant_regions.begin(); r != relevant_regions.end(); ) {
+                set<boost::shared_ptr<Region> >::iterator tmp;
+
+                tmp = r;
+                ++tmp;
 
-       for (vector<boost::shared_ptr<Source> >::iterator i = srcs.begin(); i != srcs.end(); ++i) {
+                cerr << "Cleanup " << (*r)->name() << " UC = " << (*r).use_count() << endl;
 
-                (*i)->mark_for_remove ();
-                (*i)->drop_references ();
+                playlists->destroy_region (*r);
+                RegionFactory::map_remove (*r);
+
+                (*r)->drop_sources ();
+                (*r)->drop_references ();
+
+                cerr << "\tdone UC = " << (*r).use_count() << endl;
+
+                relevant_regions.erase (r);
+
+                r = tmp;
+        }
+
+       for (list<boost::shared_ptr<Source> >::iterator s = srcs.begin(); s != srcs.end(); ) {
                 
-                cerr << "source was not used by any playlist\n";
-       }
+                {
+                        Glib::Mutex::Lock ls (source_lock);
+                        /* remove from the main source list */
+                        sources.erase ((*s)->id());
+                }
 
-       return 0;
-}
+                (*s)->mark_for_remove ();
+                (*s)->drop_references ();
+
+                s = srcs.erase (s);
+        }
 
-int
-Session::destroy_regions (list<boost::shared_ptr<Region> > regions)
-{
-       for (list<boost::shared_ptr<Region> >::iterator i = regions.begin(); i != regions.end(); ++i) {
-               destroy_region (*i);
-       }
        return 0;
 }
 
 int
 Session::remove_last_capture ()
 {
-       list<boost::shared_ptr<Region> > r;
+       list<boost::shared_ptr<Source> > srcs;
 
        boost::shared_ptr<RouteList> rl = routes.reader ();
        for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
@@ -2504,15 +2547,15 @@ Session::remove_last_capture ()
                        continue;
                }
                
-               list<boost::shared_ptr<Region> >& l = tr->last_capture_regions();
+               list<boost::shared_ptr<Source> >& l = tr->last_capture_sources();
 
                if (!l.empty()) {
-                       r.insert (r.end(), l.begin(), l.end());
+                       srcs.insert (srcs.end(), l.begin(), l.end());
                        l.clear ();
                }
        }
 
-       destroy_regions (r);
+       destroy_sources (srcs);
 
        save_state (_current_snapshot_name);
 
@@ -2536,16 +2579,19 @@ Session::add_source (boost::shared_ptr<Source> source)
        }
 
        if (result.second) {
-               set_dirty();
-       }
 
-       boost::shared_ptr<AudioFileSource> afs;
+                /* yay, new source */
 
-       if ((afs = boost::dynamic_pointer_cast<AudioFileSource>(source)) != 0) {
-               if (Config->get_auto_analyse_audio()) {
-                       Analyser::queue_source_for_analysis (source, false);
-               }
-       }
+               set_dirty();
+
+                boost::shared_ptr<AudioFileSource> afs;
+                
+                if ((afs = boost::dynamic_pointer_cast<AudioFileSource>(source)) != 0) {
+                        if (Config->get_auto_analyse_audio()) {
+                                Analyser::queue_source_for_analysis (source, false);
+                        }
+                }
+        }
 }
 
 void
@@ -2905,8 +2951,24 @@ Session::new_midi_source_name (const string& base)
 
 /** Create a new within-session MIDI source */
 boost::shared_ptr<MidiSource>
-Session::create_midi_source_for_session (string const & n)
+Session::create_midi_source_for_session (Track* track, string const & n)
 {
+        /* try to use the existing write source for the track, to keep numbering sane 
+         */
+
+        if (track) {
+                /*MidiTrack* mt = dynamic_cast<Track*> (track);
+                assert (mt);
+                */
+
+                list<boost::shared_ptr<Source> > l = track->steal_write_sources ();
+                
+                if (!l.empty()) {
+                        assert (boost::dynamic_pointer_cast<MidiSource> (l.front()));
+                        return boost::dynamic_pointer_cast<MidiSource> (l.front());
+                }
+        }
+
        const string name = new_midi_source_name (n);
        const string path = new_source_path_from_name (DataType::MIDI, name);
 
@@ -3687,12 +3749,6 @@ Session::add_automation_list(AutomationList *al)
        automation_lists[al->id()] = al;
 }
 
-nframes_t
-Session::compute_initial_length ()
-{
-       return _engine.frame_rate() * 60 * 5;
-}
-
 void
 Session::sync_order_keys (std::string const & base)
 {
@@ -3832,3 +3888,62 @@ Session::get_routes_with_regions_at (nframes64_t const p) const
 
        return rl;
 }
+
+void
+Session::goto_end ()
+{
+       if (_session_range_location) {
+               request_locate (_session_range_location->end(), false);
+       } else {
+               request_locate (0, false);
+       }
+}
+
+void
+Session::goto_start ()
+{
+       if (_session_range_location) {
+               request_locate (_session_range_location->start(), false);
+       } else {
+               request_locate (0, false);
+       }
+}
+
+void
+Session::set_session_start (nframes_t start)
+{
+       if (_session_range_location) {
+               _session_range_location->set_start (start);
+       } else {
+               add_session_range_location (start, start);
+       }
+}
+             
+void
+Session::set_session_end (nframes_t end)
+{
+       if (_session_range_location) {
+               _session_range_location->set_end (end);
+       } else {
+               add_session_range_location (end, end);
+       }
+}
+
+nframes_t
+Session::current_start_frame () const
+{
+       return _session_range_location ? _session_range_location->start() : 0;
+}
+
+nframes_t
+Session::current_end_frame () const
+{
+       return _session_range_location ? _session_range_location->end() : 0;
+}
+
+void
+Session::add_session_range_location (nframes_t start, nframes_t end)
+{
+       _session_range_location = new Location (start, end, _("session"), Location::IsSessionRange);
+       _locations.add (_session_range_location);
+}