move route_graph->rechain( r ); into Session::resort_routes_using
[ardour.git] / libs / ardour / session.cc
index 3e221507627f5d21dc16d7d5fd3340b035e22b23..3655a074d8248aab200fc5c7cd4d72ded4063d17 100644 (file)
@@ -96,6 +96,7 @@
 #include "ardour/tape_file_matcher.h"
 #include "ardour/tempo.h"
 #include "ardour/utils.h"
+#include "ardour/graph.h"
 
 #include "midi++/jack.h"
 
@@ -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 ();
                }
@@ -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
@@ -1331,6 +1326,8 @@ Session::resort_routes ()
                /* 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) {
@@ -1353,10 +1350,6 @@ Session::resort_routes_using (shared_ptr<RouteList> r)
 {
        RouteList::iterator i, j;
 
-       for (i = r->begin(); i != r->end(); ++i) {
-                (*i)->check_physical_connections ();
-        }
-
        for (i = r->begin(); i != r->end(); ++i) {
 
                (*i)->clear_fed_by ();
@@ -1388,102 +1381,18 @@ Session::resort_routes_using (shared_ptr<RouteList> r)
        RouteSorter cmp;
        r->sort (cmp);
 
-        find_route_levels (r);
+       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) {
-               DEBUG_TRACE (DEBUG::Graph, string_compose ("\t%1 signal order %2 level %3\n", 
-                                                           (*i)->name(), (*i)->order_key ("signal"),
-                                                           (*i)->graph_level()));
+               DEBUG_TRACE (DEBUG::Graph, string_compose ("\t%1 signal order %2\n", 
+                                                           (*i)->name(), (*i)->order_key ("signal")));
        }
 #endif
 
 }
 
-void
-Session::find_route_levels (shared_ptr<RouteList> rl)
-{
-        uint32_t setcnt = 0;
-        uint32_t limit = rl->size();
-        RouteList last_level;
-        RouteList this_level;
-
-        for (RouteList::iterator r = rl->begin(); r != rl->end(); ++r) {
-                
-                /* find routes with direct physical connections,
-                   or routes with no connections at all. Mark them
-                   with "special" level values, and push them into
-                   the "last_level" set.
-                
-                   All other routes get marked with a graph level
-                   of -1, which indicates that it needs to be set.
-
-                */
-                
-                if ((*r)->physically_connected()) {
-                        last_level.push_back (*r);
-                        (*r)->set_graph_level (0);
-                        setcnt++;
-                } else if (!(*r)->output()->connected()) {
-                        last_level.push_back (*r);
-                        (*r)->set_graph_level (INT32_MAX/2);
-                        setcnt++;
-                } else {
-                        (*r)->set_graph_level (-1);
-                }
-        }
-
-        // until we've set the graph level for every route ... 
-
-        while (setcnt < limit) {
-
-                for (RouteList::reverse_iterator r = rl->rbegin(); r != rl->rend(); ++r) {
-
-                        int32_t l = INT32_MAX;
-                        bool found = false;
-
-                        if ((*r)->graph_level() != -1) {
-                                // we already have the graph level for this route
-                                continue;
-                        }
-
-                        /* check if this route (r) has a direction connection to anything in
-                           the set of routes we processed last time. On the first pass
-                           through this, last_level will contain routes with either
-                           no connections or direct "physical" connections. If there is
-                           at least 1 connection, store the lowest graph level of whatever
-                           r is connected to.
-                        */
-
-                        for (RouteList::iterator o = last_level.begin(); o != last_level.end(); ++o) {
-                                bool sends_only;
-                                if ((*r)->direct_feeds (*o, &sends_only)) {
-                                        if (!sends_only) {
-                                                l = min (l, (*o)->graph_level());
-                                                found = true;
-                                        }
-                                }
-                        }
-
-                        /* if we found any connections, then mark the graph level of r, and push
-                           it into the "this_level" set that will become "last_level" next time
-                           around the while() loop.
-                        */
-
-                        if (found) {
-                                (*r)->set_graph_level (l + 1);
-                                this_level.push_back (*r);
-                                setcnt++;
-                        }
-                }
-
-                last_level = this_level;
-                this_level.clear ();
-        }
-}
-
-
 /** Find the route name starting with \a base with the lowest \a id.
  *
  * Names are constructed like e.g. "Audio 3" for base="Audio" and id=3.
@@ -1918,13 +1827,19 @@ 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;
@@ -2166,7 +2081,7 @@ Session::remove_route (shared_ptr<Route> route)
        }
         
         update_route_solo_state ();
-       find_current_end ();
+       update_session_range_location_marker ();
 
        // We need to disconnect the route's inputs and outputs
 
@@ -2480,43 +2395,64 @@ 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 */
@@ -3777,12 +3713,6 @@ 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)
 {
@@ -3922,3 +3852,62 @@ 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);
+}