For now, only use the multi-threaded process code if we are
[ardour.git] / libs / ardour / session.cc
index 37349cc5fb0cc2671f2697d2d94ca6c6c3e95807..f2343e1013af059a50a7a03fffd07df3b940da2a 100644 (file)
@@ -45,6 +45,8 @@
 #include "pbd/file_utils.h"
 #include "pbd/convert.h"
 #include "pbd/strsplit.h"
+#include "pbd/strsplit.h"
+#include "pbd/unwind.h"
 
 #include "ardour/amp.h"
 #include "ardour/analyser.h"
@@ -151,7 +153,6 @@ Session::Session (AudioEngine &eng,
        , _post_transport_work (0)
        , _send_timecode_update (false)
        , _all_route_group (new RouteGroup (*this, "all"))
-       , _process_graph (new Graph (*this))
        , routes (new RouteList)
        , _total_free_4k_blocks (0)
        , _bundles (new BundleList)
@@ -167,6 +168,13 @@ Session::Session (AudioEngine &eng,
 {
        _locations = new Locations (*this);
 
+       if (how_many_dsp_threads () > 1) {
+               /* For now, only create the graph if we are using >1 DSP threads, as
+                  it is a bit slower than the old code with 1 thread.
+               */
+               _process_graph.reset (new Graph (*this));
+       }
+
        playlists.reset (new SessionPlaylists);
 
        _all_route_group->set_active (true, this);
@@ -217,6 +225,9 @@ Session::Session (AudioEngine &eng,
 
 Session::~Session ()
 {
+#ifdef PT_TIMING       
+       ST.dump ("ST.dump");
+#endif 
        destroy ();
 }
 
@@ -536,105 +547,207 @@ Session::when_engine_running ()
        hookup_io ();
 
        if (_is_new && !no_auto_connect()) {
-
                Glib::Mutex::Lock lm (AudioEngine::instance()->process_lock());
+               auto_connect_master_bus ();
+       }
 
-               /* don't connect the master bus outputs if there is a monitor bus */
+       _state_of_the_state = StateOfTheState (_state_of_the_state & ~(CannotSave|Dirty));
 
-               if (_master_out && Config->get_auto_connect_standard_busses() && !_monitor_out) {
+        /* update latencies */
 
-                       /* if requested auto-connect the outputs to the first N physical ports.
-                        */
+        initialize_latencies ();
 
-                       uint32_t limit = _master_out->n_outputs().n_total();
+       /* hook us up to the engine */
 
-                       for (uint32_t n = 0; n < limit; ++n) {
-                               boost::shared_ptr<Port> p = _master_out->output()->nth (n);
-                               string connect_to;
-                               if (outputs[p->type()].size() > n) {
-                                       connect_to = outputs[p->type()][n];
-                               }
+       BootMessage (_("Connect to engine"));
+       _engine.set_session (this);
+}
 
-                               if (!connect_to.empty() && p->connected_to (connect_to) == false) {
-                                       if (_master_out->output()->connect (p, connect_to, this)) {
-                                               error << string_compose (_("cannot connect master output %1 to %2"), n, connect_to)
-                                                     << endmsg;
-                                               break;
-                                       }
-                               }
+void
+Session::auto_connect_master_bus ()
+{
+       if (!_master_out || !Config->get_auto_connect_standard_busses() || _monitor_out) {
+               return;
+       }
+               
+       /* if requested auto-connect the outputs to the first N physical ports.
+        */
+       
+       uint32_t limit = _master_out->n_outputs().n_total();
+       vector<string> outputs[DataType::num_types];
+       
+       for (uint32_t i = 0; i < DataType::num_types; ++i) {
+               _engine.get_physical_outputs (DataType (DataType::Symbol (i)), outputs[i]);
+       }
+       
+       for (uint32_t n = 0; n < limit; ++n) {
+               boost::shared_ptr<Port> p = _master_out->output()->nth (n);
+               string connect_to;
+               if (outputs[p->type()].size() > n) {
+                       connect_to = outputs[p->type()][n];
+               }
+               
+               if (!connect_to.empty() && p->connected_to (connect_to) == false) {
+                       if (_master_out->output()->connect (p, connect_to, this)) {
+                               error << string_compose (_("cannot connect master output %1 to %2"), n, connect_to)
+                                     << endmsg;
+                               break;
                        }
                }
+       }
+}
 
-               if (_monitor_out) {
+void
+Session::remove_monitor_section ()
+{
+       if (!_monitor_out) {
+               return;
+       }
 
-                       /* AUDIO ONLY as of june 29th 2009, because listen semantics for anything else
-                          are undefined, at best.
-                        */
+       /* force reversion to Solo-In-Pace */
+       Config->set_solo_control_is_listen_control (false);
 
-                       /* control out listens to master bus (but ignores it
-                          under some conditions)
-                       */
+       {
+               /* Hold process lock while doing this so that we don't hear bits and
+                * pieces of audio as we work on each route.
+                */
+               
+               Glib::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
+               
+               /* Connect tracks to monitor section. Note that in an
+                  existing session, the internal sends will already exist, but we want the
+                  routes to notice that they connect to the control out specifically.
+               */
+               
+               
+               boost::shared_ptr<RouteList> r = routes.reader ();
+               PBD::Unwinder<bool> uw (ignore_route_processor_changes, true);
+               
+               for (RouteList::iterator x = r->begin(); x != r->end(); ++x) {
+                       
+                       if ((*x)->is_monitor()) {
+                               /* relax */
+                       } else if ((*x)->is_master()) {
+                               /* relax */
+                       } else {
+                               (*x)->remove_aux_or_listen (_monitor_out);
+                       }
+               }
+       }
 
-                       uint32_t limit = _monitor_out->n_inputs().n_audio();
+       remove_route (_monitor_out);
+       auto_connect_master_bus ();
+}
 
-                       if (_master_out) {
-                               for (uint32_t n = 0; n < limit; ++n) {
-                                       boost::shared_ptr<AudioPort> p = _monitor_out->input()->ports().nth_audio_port (n);
-                                       boost::shared_ptr<AudioPort> o = _master_out->output()->ports().nth_audio_port (n);
+void
+Session::add_monitor_section ()
+{
+       RouteList rl;
 
-                                       if (o) {
-                                               string connect_to = o->name();
-                                               if (_monitor_out->input()->connect (p, connect_to, this)) {
-                                                       error << string_compose (_("cannot connect control input %1 to %2"), n, connect_to)
-                                                             << endmsg;
-                                                       break;
-                                               }
-                                       }
-                               }
-                       }
+       if (_monitor_out || !_master_out) {
+               return;
+       }
 
-                       /* if control out is not connected, connect control out to physical outs
-                       */
+       boost::shared_ptr<Route> r (new Route (*this, _("monitor"), Route::MonitorOut, DataType::AUDIO));
 
-                       if (!_monitor_out->output()->connected ()) {
+       if (r->init ()) {
+               return;
+       }
 
-                               if (!Config->get_monitor_bus_preferred_bundle().empty()) {
+#ifdef BOOST_SP_ENABLE_DEBUG_HOOKS
+       // boost_debug_shared_ptr_mark_interesting (r.get(), "Route");
+#endif
+       {
+               Glib::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
+               r->input()->ensure_io (_master_out->output()->n_ports(), false, this);
+               r->output()->ensure_io (_master_out->output()->n_ports(), false, this);
+       }
 
-                                       boost::shared_ptr<Bundle> b = bundle_by_name (Config->get_monitor_bus_preferred_bundle());
+       rl.push_back (r);
+       add_routes (rl, false, false);
+       
+       assert (_monitor_out);
 
-                                       if (b) {
-                                               _monitor_out->output()->connect_ports_to_bundle (b, this);
-                                       } else {
-                                               warning << string_compose (_("The preferred I/O for the monitor bus (%1) cannot be found"),
-                                                                          Config->get_monitor_bus_preferred_bundle())
-                                                       << endmsg;
-                                       }
+       /* AUDIO ONLY as of june 29th 2009, because listen semantics for anything else
+          are undefined, at best.
+       */
+       
+       uint32_t limit = _monitor_out->n_inputs().n_audio();
+       
+       if (_master_out) {
+               
+               /* connect the inputs to the master bus outputs. this
+                * represents a separate data feed from the internal sends from
+                * each route. as of jan 2011, it allows the monitor section to
+                * conditionally ignore either the internal sends or the normal
+                * input feed, but we should really find a better way to do
+                * this, i think.
+                */
+
+               _master_out->output()->disconnect (this);
+
+               for (uint32_t n = 0; n < limit; ++n) {
+                       boost::shared_ptr<AudioPort> p = _monitor_out->input()->ports().nth_audio_port (n);
+                       boost::shared_ptr<AudioPort> o = _master_out->output()->ports().nth_audio_port (n);
+                       
+                       if (o) {
+                               string connect_to = o->name();
+                               if (_monitor_out->input()->connect (p, connect_to, this)) {
+                                       error << string_compose (_("cannot connect control input %1 to %2"), n, connect_to)
+                                             << endmsg;
+                                       break;
+                               }
+                       }
+               }
+       }
+       
+       /* if monitor section is not connected, connect it to physical outs
+        */
+       
+       if (Config->get_auto_connect_standard_busses() && !_monitor_out->output()->connected ()) {
+               
+               if (!Config->get_monitor_bus_preferred_bundle().empty()) {
+                       
+                       boost::shared_ptr<Bundle> b = bundle_by_name (Config->get_monitor_bus_preferred_bundle());
+                       
+                       if (b) {
+                               _monitor_out->output()->connect_ports_to_bundle (b, this);
+                       } else {
+                               warning << string_compose (_("The preferred I/O for the monitor bus (%1) cannot be found"),
+                                                          Config->get_monitor_bus_preferred_bundle())
+                                       << endmsg;
+                       }
+                       
+               } else {
+                       
+                       /* Monitor bus is audio only */
 
-                               } else {
+                       uint32_t mod = n_physical_outputs.get (DataType::AUDIO);
+                       uint32_t limit = _monitor_out->n_outputs().get (DataType::AUDIO);
+                       vector<string> outputs[DataType::num_types];
 
-                                       /* Monitor bus is audio only */
-                                       uint32_t mod = n_physical_outputs.get (DataType::AUDIO);
-                                       uint32_t limit = _monitor_out->n_outputs().get (DataType::AUDIO);
-
-                                       if (mod != 0) {
-
-                                               for (uint32_t n = 0; n < limit; ++n) {
-
-                                                       boost::shared_ptr<Port> p = _monitor_out->output()->ports().port(DataType::AUDIO, n);
-                                                       string connect_to;
-                                                       if (outputs[DataType::AUDIO].size() > (n % mod)) {
-                                                               connect_to = outputs[DataType::AUDIO][n % mod];
-                                                       }
-
-                                                       if (!connect_to.empty()) {
-                                                               if (_monitor_out->output()->connect (p, connect_to, this)) {
-                                                                       error << string_compose (
-                                                                                       _("cannot connect control output %1 to %2"),
-                                                                                       n, connect_to)
-                                                                               << endmsg;
-                                                                       break;
-                                                               }
-                                                       }
+                       for (uint32_t i = 0; i < DataType::num_types; ++i) {
+                               _engine.get_physical_outputs (DataType (DataType::Symbol (i)), outputs[i]);
+                       }
+                       
+                       
+                       if (mod != 0) {
+                               
+                               for (uint32_t n = 0; n < limit; ++n) {
+                                       
+                                       boost::shared_ptr<Port> p = _monitor_out->output()->ports().port(DataType::AUDIO, n);
+                                       string connect_to;
+                                       if (outputs[DataType::AUDIO].size() > (n % mod)) {
+                                               connect_to = outputs[DataType::AUDIO][n % mod];
+                                       }
+                                       
+                                       if (!connect_to.empty()) {
+                                               if (_monitor_out->output()->connect (p, connect_to, this)) {
+                                                       error << string_compose (
+                                                               _("cannot connect control output %1 to %2"),
+                                                               n, connect_to)
+                                                             << endmsg;
+                                                       break;
                                                }
                                        }
                                }
@@ -642,16 +755,32 @@ Session::when_engine_running ()
                }
        }
 
-       _state_of_the_state = StateOfTheState (_state_of_the_state & ~(CannotSave|Dirty));
+       /* Hold process lock while doing this so that we don't hear bits and
+        * pieces of audio as we work on each route.
+        */
+        
+       Glib::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
 
-        /* update latencies */
+       /* Connect tracks to monitor section. Note that in an
+          existing session, the internal sends will already exist, but we want the
+          routes to notice that they connect to the control out specifically.
+       */
 
-        initialize_latencies ();
 
-       /* hook us up to the engine */
+       boost::shared_ptr<RouteList> rls = routes.reader ();
 
-       BootMessage (_("Connect to engine"));
-       _engine.set_session (this);
+       PBD::Unwinder<bool> uw (ignore_route_processor_changes, true);
+
+       for (RouteList::iterator x = rls->begin(); x != rls->end(); ++x) {
+               
+               if ((*x)->is_monitor()) {
+                       /* relax */
+               } else if ((*x)->is_master()) {
+                       /* relax */
+               } else {
+                       (*x)->enable_monitor_send ();
+               }
+       }
 }
 
 void
@@ -698,30 +827,6 @@ Session::hookup_io ()
 
        Delivery::reset_panners ();
 
-       /* Connect tracks to monitor/listen bus if there is one.  Note that in an
-          existing session, the internal sends will already exist, but we want the
-          routes to notice that they connect to the control out specifically.
-       */
-
-       if (_monitor_out) {
-               boost::shared_ptr<RouteList> r = routes.reader ();
-               for (RouteList::iterator x = r->begin(); x != r->end(); ++x) {
-
-                       if ((*x)->is_monitor()) {
-
-                               /* relax */
-
-                       } else if ((*x)->is_master()) {
-
-                               /* relax */
-
-                       } else {
-
-                               (*x)->listen_via_monitor ();
-                       }
-               }
-       }
-
        /* Anyone who cares about input state, wake up and do something */
 
        IOConnectionsComplete (); /* EMIT SIGNAL */
@@ -1285,8 +1390,6 @@ Session::resort_routes ()
                /* writer goes out of scope and forces update */
        }
 
-       //_process_graph->dump(1);
-
 #ifndef NDEBUG
        boost::shared_ptr<RouteList> rl = routes.reader ();
        for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
@@ -1361,7 +1464,10 @@ Session::resort_routes_using (boost::shared_ptr<RouteList> r)
                   Note: the process graph rechain does not require a
                   topologically-sorted list, but hey ho.
                */
-               _process_graph->rechain (sorted_routes, edges);
+               if (_process_graph) {
+                       _process_graph->rechain (sorted_routes, edges);
+               }
+               
                _current_route_graph = edges;
 
                /* Complete the building of the routes' lists of what directly
@@ -1464,7 +1570,7 @@ Session::new_midi_track (TrackMode mode, RouteGroup* route_group, uint32_t how_m
        list<boost::shared_ptr<MidiTrack> > ret;
        uint32_t control_id;
 
-       control_id = ntracks() + nbusses();
+       control_id = next_control_id ();
 
        bool const use_number = (how_many != 1) || name_template.empty () || name_template == _("MIDI");
 
@@ -1680,9 +1786,8 @@ Session::auto_connect_route (boost::shared_ptr<Route> route, ChanCount& existing
  *  @param name_template string to use for the start of the name, or "" to use "Audio".
  */
 list< boost::shared_ptr<AudioTrack> >
-Session::new_audio_track (
-       int input_channels, int output_channels, TrackMode mode, RouteGroup* route_group, uint32_t how_many, string name_template
-       )
+Session::new_audio_track (int input_channels, int output_channels, TrackMode mode, RouteGroup* route_group, 
+                         uint32_t how_many, string name_template)
 {
        char track_name[32];
        uint32_t track_id = 0;
@@ -1691,7 +1796,7 @@ Session::new_audio_track (
        list<boost::shared_ptr<AudioTrack> > ret;
        uint32_t control_id;
 
-       control_id = ntracks() + nbusses() + 1;
+       control_id = next_control_id ();
 
        bool const use_number = (how_many != 1) || name_template.empty () || name_template == _("Audio");
 
@@ -1810,7 +1915,7 @@ Session::new_audio_route (int input_channels, int output_channels, RouteGroup* r
        RouteList ret;
        uint32_t control_id;
 
-       control_id = ntracks() + nbusses() + 1;
+       control_id = next_control_id ();
 
        bool const use_number = (how_many != 1) || name_template.empty () || name_template == _("Bus");
        
@@ -1898,7 +2003,7 @@ Session::new_route_from_template (uint32_t how_many, const std::string& template
 
        XMLNode* node = tree.root();
 
-       control_id = ntracks() + nbusses() + 1;
+       control_id = next_control_id ();
 
        while (how_many) {
 
@@ -2045,13 +2150,17 @@ Session::add_routes (RouteList& new_routes, bool auto_connect, bool save)
 
        if (_monitor_out && IO::connecting_legal) {
 
-               for (RouteList::iterator x = new_routes.begin(); x != new_routes.end(); ++x) {
-                       if ((*x)->is_monitor()) {
-                               /* relax */
-                       } else if ((*x)->is_master()) {
-                               /* relax */
-                       } else {
-                               (*x)->listen_via_monitor ();
+               {
+                       Glib::Mutex::Lock lm (_engine.process_lock());          
+                       
+                       for (RouteList::iterator x = new_routes.begin(); x != new_routes.end(); ++x) {
+                               if ((*x)->is_monitor()) {
+                                       /* relax */
+                               } else if ((*x)->is_master()) {
+                                       /* relax */
+                               } else {
+                                       (*x)->enable_monitor_send ();
+                               }
                        }
                }
 
@@ -2135,13 +2244,14 @@ Session::add_internal_sends (boost::shared_ptr<Route> dest, Placement p, boost::
                dest->add_internal_return();
        }
 
+       
        for (RouteList::iterator i = senders->begin(); i != senders->end(); ++i) {
-
+               
                if ((*i)->is_monitor() || (*i)->is_master() || (*i) == dest) {
                        continue;
                }
-
-               (*i)->listen_via (dest, p);
+               
+               (*i)->add_aux_send (dest, p);
        }
 
        graph_reordered ();
@@ -2150,7 +2260,7 @@ Session::add_internal_sends (boost::shared_ptr<Route> dest, Placement p, boost::
 void
 Session::remove_route (boost::shared_ptr<Route> route)
 {
-       if (((route == _master_out) || (route == _monitor_out)) && !Config->get_allow_special_bus_removal()) {
+       if (route == _master_out) {
                return;
        }
 
@@ -2172,13 +2282,6 @@ Session::remove_route (boost::shared_ptr<Route> route)
                }
 
                if (route == _monitor_out) {
-
-                       /* cancel control outs for all routes */
-
-                       for (RouteList::iterator r = rs->begin(); r != rs->end(); ++r) {
-                               (*r)->drop_listen (_monitor_out);
-                       }
-
                        _monitor_out.reset ();
                }
 
@@ -2219,7 +2322,9 @@ Session::remove_route (boost::shared_ptr<Route> route)
         */
 
        resort_routes ();
-       _process_graph->clear_other_chain ();
+       if (_process_graph) {
+               _process_graph->clear_other_chain ();
+       }
 
        /* get rid of it from the dead wood collection in the route list manager */
 
@@ -3530,6 +3635,26 @@ Session::next_send_id ()
        }
 }
 
+uint32_t
+Session::next_aux_send_id ()
+{
+       /* this doesn't really loop forever. just think about it */
+
+       while (true) {
+               for (boost::dynamic_bitset<uint32_t>::size_type n = 0; n < aux_send_bitset.size(); ++n) {
+                       if (!aux_send_bitset[n]) {
+                               aux_send_bitset[n] = true;
+                               return n;
+
+                       }
+               }
+
+               /* none available, so resize and try again */
+
+               aux_send_bitset.resize (aux_send_bitset.size() + 16, false);
+       }
+}
+
 uint32_t
 Session::next_return_id ()
 {
@@ -3562,6 +3687,18 @@ Session::mark_send_id (uint32_t id)
        send_bitset[id] = true;
 }
 
+void
+Session::mark_aux_send_id (uint32_t id)
+{
+       if (id >= aux_send_bitset.size()) {
+               aux_send_bitset.resize (id+16, false);
+       }
+       if (aux_send_bitset[id]) {
+               warning << string_compose (_("aux send ID %1 appears to be in use already"), id) << endmsg;
+       }
+       aux_send_bitset[id] = true;
+}
+
 void
 Session::mark_return_id (uint32_t id)
 {
@@ -3594,6 +3731,14 @@ Session::unmark_send_id (uint32_t id)
        }
 }
 
+void
+Session::unmark_aux_send_id (uint32_t id)
+{
+       if (id < aux_send_bitset.size()) {
+               aux_send_bitset[id] = false;
+       }
+}
+
 void
 Session::unmark_return_id (uint32_t id)
 {
@@ -4561,3 +4706,9 @@ Session::session_name_is_legal (const string& path)
 
        return 0;
 }
+
+uint32_t 
+Session::next_control_id () const
+{
+       return ntracks() + nbusses() + 1;
+}