AccessAction() OSC patch from Ryan Scott
[ardour.git] / libs / ardour / session.cc
index 987a8377efa7d7e0afa85d28b6e9497b25001ccf..5b8d2f850677abea63df09685b996c7960d0e8f7 100644 (file)
@@ -15,7 +15,6 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id$
 */
 
 #include <algorithm>
 #include <cerrno>
 #include <unistd.h>
 #include <limits.h>
+#include <sys/time.h>
 
 #include <sigc++/bind.h>
 #include <sigc++/retype.h>
 
 #include <glibmm/thread.h>
 #include <glibmm/miscutils.h>
+#include <glibmm/fileutils.h>
 
 #include <pbd/error.h>
 #include <glibmm/thread.h>
 #include <pbd/pathscanner.h>
 #include <pbd/stl_delete.h>
 #include <pbd/basename.h>
+#include <pbd/stacktrace.h>
 
 #include <ardour/audioengine.h>
 #include <ardour/configuration.h>
 #include <ardour/session.h>
+#include <ardour/analyser.h>
 #include <ardour/audio_diskstream.h>
 #include <ardour/utils.h>
 #include <ardour/audioplaylist.h>
 #include <ardour/audioregion.h>
 #include <ardour/audiofilesource.h>
-#include <ardour/destructive_filesource.h>
 #include <ardour/auditioner.h>
 #include <ardour/recent_sessions.h>
 #include <ardour/redirect.h>
@@ -79,6 +81,12 @@ using namespace ARDOUR;
 using namespace PBD;
 using boost::shared_ptr;
 
+#ifdef __x86_64__
+static const int CPU_CACHE_ALIGN = 64;
+#else
+static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */
+#endif
+
 const char* Session::_template_suffix = X_(".template");
 const char* Session::_statefile_suffix = X_(".ardour");
 const char* Session::_pending_suffix = X_(".pending");
@@ -87,19 +95,31 @@ const char* Session::sound_dir_name = X_("audiofiles");
 const char* Session::peak_dir_name = X_("peaks");
 const char* Session::dead_sound_dir_name = X_("dead_sounds");
 const char* Session::interchange_dir_name = X_("interchange");
+const char* Session::export_dir_name = X_("export");
+
+bool Session::_disable_all_loaded_plugins = false;
 
-Session::compute_peak_t                                Session::compute_peak                   = 0;
+Session::compute_peak_t                        Session::compute_peak           = 0;
+Session::find_peaks_t                  Session::find_peaks             = 0;
 Session::apply_gain_to_buffer_t                Session::apply_gain_to_buffer   = 0;
 Session::mix_buffers_with_gain_t       Session::mix_buffers_with_gain  = 0;
 Session::mix_buffers_no_gain_t         Session::mix_buffers_no_gain    = 0;
 
+sigc::signal<void,std::string> Session::Dialog;
 sigc::signal<int> Session::AskAboutPendingState;
+sigc::signal<int,nframes_t,nframes_t> Session::AskAboutSampleRateMismatch;
 sigc::signal<void> Session::SendFeedback;
 
 sigc::signal<void> Session::SMPTEOffsetChanged;
 sigc::signal<void> Session::StartTimeChanged;
 sigc::signal<void> Session::EndTimeChanged;
 
+sigc::signal<void> Session::AutoBindingOn;
+sigc::signal<void> Session::AutoBindingOff;
+
+
+sigc::signal<void, std::string, std::string> Session::Exported;
+
 int
 Session::find_session (string str, string& path, string& snapshot, bool& isnew)
 {
@@ -251,9 +271,9 @@ Session::find_session (string str, string& path, string& snapshot, bool& isnew)
 }
 
 Session::Session (AudioEngine &eng,
-                 string fullpath,
-                 string snapshot_name,
-                 string* mix_template)
+                 const string& fullpath,
+                 const string& snapshot_name,
+                 string mix_template)
 
        : _engine (eng),
          _mmc_port (default_mmc_port),
@@ -269,23 +289,28 @@ Session::Session (AudioEngine &eng,
 {
        bool new_session;
 
+       if (!eng.connected()) {
+               throw failed_constructor();
+       }
+
        cerr << "Loading session " << fullpath << " using snapshot " << snapshot_name << " (1)" << endl;
 
-       n_physical_outputs = _engine.n_physical_outputs();
-       n_physical_inputs =  _engine.n_physical_inputs();
+       n_physical_audio_outputs = _engine.n_physical_audio_outputs();
+       n_physical_audio_inputs =  _engine.n_physical_audio_inputs();
 
        first_stage_init (fullpath, snapshot_name);
        
-       new_session = !g_file_test (_path.c_str(), GFileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR));
+       new_session = !Glib::file_test (_path, Glib::FileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR));
+
        if (new_session) {
                if (create (new_session, mix_template, compute_initial_length())) {
-                       cerr << "create failed\n";
+                       destroy ();
                        throw failed_constructor ();
                }
        }
        
        if (second_stage_init (new_session)) {
-               cerr << "2nd state failed\n";
+               destroy ();
                throw failed_constructor ();
        }
        
@@ -326,59 +351,86 @@ Session::Session (AudioEngine &eng,
 {
        bool new_session;
 
+       if (!eng.connected()) {
+               throw failed_constructor();
+       }
+
        cerr << "Loading session " << fullpath << " using snapshot " << snapshot_name << " (2)" << endl;
 
-       n_physical_outputs = max (requested_physical_out, _engine.n_physical_outputs());
-       n_physical_inputs = max (requested_physical_in, _engine.n_physical_inputs());
+       n_physical_audio_outputs = _engine.n_physical_audio_outputs();
+       n_physical_audio_inputs = _engine.n_physical_audio_inputs();
+
+       if (n_physical_audio_inputs) {
+               n_physical_audio_inputs = max (requested_physical_in, n_physical_audio_inputs);
+       }
+
+       if (n_physical_audio_outputs) {
+               n_physical_audio_outputs = max (requested_physical_out, n_physical_audio_outputs);
+       }
 
        first_stage_init (fullpath, snapshot_name);
 
        new_session = !g_file_test (_path.c_str(), GFileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR));
 
        if (new_session) {
-               if (create (new_session, 0, initial_length)) {
+               if (create (new_session, string(), initial_length)) {
+                       destroy ();
                        throw failed_constructor ();
                }
        }
 
-       if (control_out_channels) {
-               shared_ptr<Route> r (new Route (*this, _("monitor"), -1, control_out_channels, -1, control_out_channels, Route::ControlOut));
-               RouteList rl;
-               rl.push_back (r);
-               add_routes (rl);
-               _control_out = r;
-       }
-
-       if (master_out_channels) {
-               shared_ptr<Route> r (new Route (*this, _("master"), -1, master_out_channels, -1, master_out_channels, Route::MasterOut));
+       {
+               /* set up Master Out and Control Out if necessary */
+               
                RouteList rl;
-               rl.push_back (r);
-               add_routes (rl);
-               _master_out = r;
-       } else {
-               /* prohibit auto-connect to master, because there isn't one */
-               output_ac = AutoConnectOption (output_ac & ~AutoConnectMaster);
+               int control_id = 1;
+               
+               if (control_out_channels) {
+                       shared_ptr<Route> r (new Route (*this, _("monitor"), -1, control_out_channels, -1, control_out_channels, Route::ControlOut));
+                       r->set_remote_control_id (control_id++);
+                       
+                       rl.push_back (r);
+               }
+               
+               if (master_out_channels) {
+                       shared_ptr<Route> r (new Route (*this, _("master"), -1, master_out_channels, -1, master_out_channels, Route::MasterOut));
+                       r->set_remote_control_id (control_id);
+                        
+                       rl.push_back (r);
+               } else {
+                       /* prohibit auto-connect to master, because there isn't one */
+                       output_ac = AutoConnectOption (output_ac & ~AutoConnectMaster);
+               }
+               
+               if (!rl.empty()) {
+                       add_routes (rl, false);
+               }
+               
        }
 
        Config->set_input_auto_connect (input_ac);
        Config->set_output_auto_connect (output_ac);
 
        if (second_stage_init (new_session)) {
+               destroy ();
                throw failed_constructor ();
        }
        
-       store_recent_sessions(_name, _path);
+       store_recent_sessions (_name, _path);
        
-       bool was_dirty = dirty ();
-
        _state_of_the_state = StateOfTheState (_state_of_the_state & ~Dirty);
 
-       if (was_dirty) {
-               DirtyChanged (); /* EMIT SIGNAL */
-       }
+
+       Config->ParameterChanged.connect (mem_fun (*this, &Session::config_changed));
 }
 
 Session::~Session ()
+{
+       destroy ();
+}
+
+void
+Session::destroy ()
 {
        /* if we got to here, leaving pending capture state around
           is a mistake.
@@ -387,6 +439,7 @@ Session::~Session ()
        remove_pending_capture_state ();
 
        _state_of_the_state = StateOfTheState (CannotSave|Deletion);
+
        _engine.remove_session ();
 
        GoingAway (); /* EMIT SIGNAL */
@@ -397,7 +450,7 @@ Session::~Session ()
 
        /* clear history so that no references to objects are held any more */
 
-       history.clear ();
+       _history.clear ();
 
        /* clear state tree so that no references to objects are held any more */
        
@@ -459,10 +512,24 @@ Session::~Session ()
                tmp = i;
                ++tmp;
 
-               delete *i;
+               (*i)->drop_references ();
+               
+               i = tmp;
+       }
+       
+       for (PlaylistList::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ) {
+               PlaylistList::iterator tmp;
+
+               tmp = i;
+               ++tmp;
+
+               (*i)->drop_references ();
                
                i = tmp;
        }
+       
+       playlists.clear ();
+       unused_playlists.clear ();
 
 #ifdef TRACK_DESTRUCTION
        cerr << "delete audio regions\n";
@@ -517,14 +584,13 @@ Session::~Session ()
 
                tmp = i;
                ++tmp;
-
+               
                i->second->drop_references ();
-
+               
                i = tmp;
        }
-
        audio_sources.clear ();
-
+       
 #ifdef TRACK_DESTRUCTION
        cerr << "delete mix groups\n";
 #endif /* TRACK_DESTRUCTION */
@@ -607,11 +673,13 @@ Session::when_engine_running ()
 
        /* we don't want to run execute this again */
 
-       first_time_running.disconnect ();
+       BootMessage (_("Set block size and sample rate"));
 
        set_block_size (_engine.frames_per_cycle());
        set_frame_rate (_engine.frame_rate());
 
+       BootMessage (_("Using configuration"));
+
        Config->map_parameters (mem_fun (*this, &Session::config_changed));
 
        /* every time we reconnect, recompute worst case output latencies */
@@ -651,7 +719,7 @@ Session::when_engine_running ()
                        
                        /* default state for Click */
 
-                       first_physical_output = _engine.get_nth_physical_output (0);
+                       first_physical_output = _engine.get_nth_physical_audio_output (0);
                        
                        if (first_physical_output.length()) {
                                if (_click_io->add_output_port (first_physical_output, this)) {
@@ -667,62 +735,49 @@ Session::when_engine_running ()
                error << _("cannot setup Click I/O") << endmsg;
        }
 
+       BootMessage (_("Compute I/O Latencies"));
+
        set_worst_io_latencies ();
 
        if (_clicking) {
                // XXX HOW TO ALERT UI TO THIS ? DO WE NEED TO?
        }
 
-       if (auditioner == 0) {
-
-               /* we delay creating the auditioner till now because
-                  it makes its own connections to ports named
-                  in the ARDOUR_RC config file. the engine has
-                  to be running for this to work.
-               */
-
-               try {
-                       auditioner.reset (new Auditioner (*this));
-               }
-
-               catch (failed_constructor& err) {
-                       warning << _("cannot create Auditioner: no auditioning of regions possible") << endmsg;
-               }
-       }
-
        /* Create a set of Connection objects that map
           to the physical outputs currently available
        */
 
+       BootMessage (_("Set up standard connections"));
+
        /* ONE: MONO */
 
-       for (uint32_t np = 0; np < n_physical_outputs; ++np) {
+       for (uint32_t np = 0; np < n_physical_audio_outputs; ++np) {
                char buf[32];
                snprintf (buf, sizeof (buf), _("out %" PRIu32), np+1);
 
                Connection* c = new OutputConnection (buf, true);
 
                c->add_port ();
-               c->add_connection (0, _engine.get_nth_physical_output (np));
+               c->add_connection (0, _engine.get_nth_physical_audio_output (np));
 
                add_connection (c);
        }
 
-       for (uint32_t np = 0; np < n_physical_inputs; ++np) {
+       for (uint32_t np = 0; np < n_physical_audio_inputs; ++np) {
                char buf[32];
                snprintf (buf, sizeof (buf), _("in %" PRIu32), np+1);
 
                Connection* c = new InputConnection (buf, true);
 
                c->add_port ();
-               c->add_connection (0, _engine.get_nth_physical_input (np));
+               c->add_connection (0, _engine.get_nth_physical_audio_input (np));
 
                add_connection (c);
        }
 
        /* TWO: STEREO */
 
-       for (uint32_t np = 0; np < n_physical_outputs; np +=2) {
+       for (uint32_t np = 0; np < n_physical_audio_outputs; np +=2) {
                char buf[32];
                snprintf (buf, sizeof (buf), _("out %" PRIu32 "+%" PRIu32), np+1, np+2);
 
@@ -730,13 +785,13 @@ Session::when_engine_running ()
 
                c->add_port ();
                c->add_port ();
-               c->add_connection (0, _engine.get_nth_physical_output (np));
-               c->add_connection (1, _engine.get_nth_physical_output (np+1));
+               c->add_connection (0, _engine.get_nth_physical_audio_output (np));
+               c->add_connection (1, _engine.get_nth_physical_audio_output (np+1));
 
                add_connection (c);
        }
 
-       for (uint32_t np = 0; np < n_physical_inputs; np +=2) {
+       for (uint32_t np = 0; np < n_physical_audio_inputs; np +=2) {
                char buf[32];
                snprintf (buf, sizeof (buf), _("in %" PRIu32 "+%" PRIu32), np+1, np+2);
 
@@ -744,8 +799,8 @@ Session::when_engine_running ()
 
                c->add_port ();
                c->add_port ();
-               c->add_connection (0, _engine.get_nth_physical_input (np));
-               c->add_connection (1, _engine.get_nth_physical_input (np+1));
+               c->add_connection (0, _engine.get_nth_physical_audio_input (np));
+               c->add_connection (1, _engine.get_nth_physical_audio_input (np+1));
 
                add_connection (c);
        }
@@ -778,7 +833,7 @@ Session::when_engine_running ()
                        }
                        n = 0;
                        while ((int) _master_out->n_outputs() < _master_out->output_maximum()) {
-                               if (_master_out->add_output_port (_engine.get_nth_physical_output (n), this)) {
+                               if (_master_out->add_output_port (_engine.get_nth_physical_audio_output (n), this)) {
                                        error << _("cannot setup master outputs")
                                              << endmsg;
                                        break;
@@ -798,11 +853,15 @@ Session::when_engine_running ()
                }
                add_connection (c);
        } 
+       
+       BootMessage (_("Setup signal flow and plugins"));
 
        hookup_io ();
 
        /* catch up on send+insert cnts */
 
+       BootMessage (_("Catch up with send/insert state"));
+
        insert_cnt = 0;
        
        for (list<PortInsert*>::iterator i = _port_inserts.begin(); i != _port_inserts.end(); ++i) {
@@ -827,21 +886,23 @@ Session::when_engine_running ()
                }
        }
 
+       
        _state_of_the_state = StateOfTheState (_state_of_the_state & ~(CannotSave|Dirty));
 
        /* hook us up to the engine */
 
+       BootMessage (_("Connect to engine"));
+
        _engine.set_session (this);
 
 #ifdef HAVE_LIBLO
        /* and to OSC */
 
+       BootMessage (_("OSC startup"));
+
        osc->set_session (*this);
 #endif
     
-       _state_of_the_state = Clean;
-
-       DirtyChanged (); /* EMIT SIGNAL */
 }
 
 void
@@ -853,12 +914,30 @@ Session::hookup_io ()
 
        _state_of_the_state = StateOfTheState (_state_of_the_state | InitialConnecting);
 
+
+       if (auditioner == 0) {
+               
+               /* we delay creating the auditioner till now because
+                  it makes its own connections to ports.
+                  the engine has to be running for this to work.
+               */
+               
+               try {
+                       auditioner.reset (new Auditioner (*this));
+               }
+               
+               catch (failed_constructor& err) {
+                       warning << _("cannot create Auditioner: no auditioning of regions possible") << endmsg;
+               }
+       }
+
        /* Tell all IO objects to create their ports */
 
        IO::enable_ports ();
 
        if (_control_out) {
                uint32_t n;
+               vector<string> cports;
 
                while ((int) _control_out->n_inputs() < _control_out->input_maximum()) {
                        if (_control_out->add_input_port ("", this)) {
@@ -869,14 +948,27 @@ Session::hookup_io ()
                }
                n = 0;
                while ((int) _control_out->n_outputs() < _control_out->output_maximum()) {
-                       if (_control_out->add_output_port (_engine.get_nth_physical_output (n), this)) {
+                       if (_control_out->add_output_port (_engine.get_nth_physical_audio_output (n), this)) {
                                error << _("cannot set up master outputs")
                                      << endmsg;
                                break;
                        }
                        n++;
                }
-       }
+
+
+               uint32_t ni = _control_out->n_inputs();
+
+               for (n = 0; n < ni; ++n) {
+                       cports.push_back (_control_out->input(n)->name());
+               }
+
+               boost::shared_ptr<RouteList> r = routes.reader ();              
+
+               for (RouteList::iterator x = r->begin(); x != r->end(); ++x) {
+                       (*x)->set_control_outs (cports);
+               }
+       } 
 
        /* Tell all IO objects to connect themselves together */
 
@@ -892,6 +984,7 @@ Session::hookup_io ()
 
        _state_of_the_state = StateOfTheState (_state_of_the_state & ~InitialConnecting);
 
+
        /* now handle the whole enchilada as if it was one
           graph reorder event.
        */
@@ -904,7 +997,7 @@ Session::hookup_io ()
 }
 
 void
-Session::playlist_length_changed (Playlist* pl)
+Session::playlist_length_changed ()
 {
        /* we can't just increase end_location->end() if pl->get_maximum_extent() 
           if larger. if the playlist used to be the longest playlist,
@@ -916,12 +1009,19 @@ Session::playlist_length_changed (Playlist* pl)
 }
 
 void
-Session::diskstream_playlist_changed (boost::shared_ptr<Diskstream> dstream)
+Session::diskstream_playlist_changed (boost::weak_ptr<Diskstream> wptr)
 {
-       Playlist *playlist;
+       boost::shared_ptr<Diskstream> dstream = wptr.lock();
+       
+       if (!dstream) {
+               return;
+
+       }
+
+       boost::shared_ptr<Playlist> playlist;
 
        if ((playlist = dstream->playlist()) != 0) {
-         playlist->LengthChanged.connect (sigc::bind (mem_fun (this, &Session::playlist_length_changed), playlist));
+               playlist->LengthChanged.connect (mem_fun (this, &Session::playlist_length_changed));
        }
        
        /* see comment in playlist_length_changed () */
@@ -1028,7 +1128,6 @@ Session::auto_loop_changed (Location* location)
        }       
 
        last_loopend = location->end();
-       
 }
 
 void
@@ -1066,6 +1165,10 @@ Session::set_auto_punch_location (Location* location)
        auto_punch_changed_connection = location->changed.connect (mem_fun (this, &Session::auto_punch_changed));
 
        location->set_auto_punch (true, this);
+
+
+       auto_punch_changed (location);
+
        auto_punch_location_changed (location);
 }
 
@@ -1105,6 +1208,13 @@ Session::set_auto_loop_location (Location* location)
        auto_loop_changed_connection = location->changed.connect (mem_fun (this, &Session::auto_loop_changed));
 
        location->set_auto_loop (true, this);
+
+       /* take care of our stuff first */
+
+       auto_loop_changed (location);
+
+       /* now tell everyone else */
+
        auto_loop_location_changed (location);
 }
 
@@ -1182,7 +1292,7 @@ Session::disable_record (bool rt_context, bool force)
 
        if ((rs = (RecordState) g_atomic_int_get (&_record_status)) != Disabled) {
 
-               if (!Config->get_latched_record_enable () || force) {
+               if ((!Config->get_latched_record_enable () && !play_loop) || force) {
                        g_atomic_int_set (&_record_status, Disabled);
                } else {
                        if (rs == Recording) {
@@ -1213,15 +1323,18 @@ Session::disable_record (bool rt_context, bool force)
 void
 Session::step_back_from_record ()
 {
-       g_atomic_int_set (&_record_status, Enabled);
+       /* XXX really atomic compare+swap here */
+       if (g_atomic_int_get (&_record_status) == Recording) {
+               g_atomic_int_set (&_record_status, Enabled);
 
-       if (Config->get_monitoring_model() == HardwareMonitoring) {
-               boost::shared_ptr<DiskstreamList> dsl = diskstreams.reader();
-               
-               for (DiskstreamList::iterator i = dsl->begin(); i != dsl->end(); ++i) {
-                       if (Config->get_auto_input() && (*i)->record_enabled ()) {
-                               //cerr << "switching from input" << __FILE__ << __LINE__ << endl << endl;
-                               (*i)->monitor_input (false);   
+               if (Config->get_monitoring_model() == HardwareMonitoring && Config->get_auto_input()) {
+                       boost::shared_ptr<DiskstreamList> dsl = diskstreams.reader();
+                       
+                       for (DiskstreamList::iterator i = dsl->begin(); i != dsl->end(); ++i) {
+                               if ((*i)->record_enabled ()) {
+                                       //cerr << "switching from input" << __FILE__ << __LINE__ << endl << endl;
+                                       (*i)->monitor_input (false);   
+                               }
                        }
                }
        }
@@ -1322,7 +1435,9 @@ Session::set_frame_rate (nframes_t frames_per_second)
 
        sync_time_vars();
 
-       Route::set_automation_interval ((jack_nframes_t) ceil ((double) frames_per_second * 0.25));
+       IO::set_automation_interval ((jack_nframes_t) ceil ((double) frames_per_second * (0.001 * Config->get_automation_interval())));
+
+       clear_clicks ();
 
        // XXX we need some equivalent to this, somehow
        // SndFileSource::setup_standard_crossfades (frames_per_second);
@@ -1346,7 +1461,7 @@ Session::set_block_size (nframes_t nframes)
                uint32_t np;
                        
                current_block_size = nframes;
-               
+
                for (np = 0, i = _passthru_buffers.begin(); i != _passthru_buffers.end(); ++i, ++np) {
                        free (*i);
                }
@@ -1367,7 +1482,7 @@ Session::set_block_size (nframes_t nframes)
 #ifdef NO_POSIX_MEMALIGN
                        buf = (Sample *) malloc(current_block_size * sizeof(Sample));
 #else
-                       posix_memalign((void **)&buf,16,current_block_size * 4);
+                       posix_memalign((void **)&buf,CPU_CACHE_ALIGN,current_block_size * sizeof(Sample));
 #endif                 
                        *i = buf;
 
@@ -1585,6 +1700,7 @@ Session::new_audio_track (int input_channels, int output_channels, TrackMode mod
        string port;
        RouteList new_routes;
        list<boost::shared_ptr<AudioTrack> > ret;
+       uint32_t control_id;
 
        /* count existing audio tracks */
 
@@ -1606,8 +1722,9 @@ Session::new_audio_track (int input_channels, int output_channels, TrackMode mod
        uint32_t nphysical_in;
        uint32_t nphysical_out;
 
-       _engine.get_physical_outputs (physoutputs);
-       _engine.get_physical_inputs (physinputs);
+       _engine.get_physical_audio_outputs (physoutputs);
+       _engine.get_physical_audio_inputs (physinputs);
+       control_id = ntracks() + nbusses() + 1;
 
        while (how_many) {
 
@@ -1630,26 +1747,29 @@ Session::new_audio_track (int input_channels, int output_channels, TrackMode mod
                } while (track_id < (UINT_MAX-1));
 
                if (Config->get_input_auto_connect() & AutoConnectPhysical) {
-                       nphysical_in = min (n_physical_inputs, (uint32_t) physinputs.size());
+                       nphysical_in = min (n_physical_audio_inputs, (uint32_t) physinputs.size());
                } else {
                        nphysical_in = 0;
                }
                
                if (Config->get_output_auto_connect() & AutoConnectPhysical) {
-                       nphysical_out = min (n_physical_outputs, (uint32_t) physinputs.size());
+                       nphysical_out = min (n_physical_audio_outputs, (uint32_t) physinputs.size());
                } else {
                        nphysical_out = 0;
                }
+
+               shared_ptr<AudioTrack> track;
                
                try {
-                       shared_ptr<AudioTrack> track (new AudioTrack (*this, track_name, Route::Flag (0), mode));
+                       track = boost::shared_ptr<AudioTrack>((new AudioTrack (*this, track_name, Route::Flag (0), mode)));
                        
                        if (track->ensure_io (input_channels, output_channels, false, this)) {
                                error << string_compose (_("cannot configure %1 in/%2 out configuration for new audio track"),
                                                         input_channels, output_channels)
                                      << endmsg;
+                               goto failed;
                        }
-                       
+       
                        if (nphysical_in) {
                                for (uint32_t x = 0; x < track->n_inputs() && x < nphysical_in; ++x) {
                                        
@@ -1684,42 +1804,84 @@ Session::new_audio_track (int input_channels, int output_channels, TrackMode mod
                        
                        channels_used += track->n_inputs ();
 
-                       if (_control_out) {
-                               vector<string> cports;
-                               uint32_t ni = _control_out->n_inputs();
-                               
-                               for (n = 0; n < ni; ++n) {
-                                       cports.push_back (_control_out->input(n)->name());
-                               }
-                               
-                               track->set_control_outs (cports);
-                       }
+                       track->audio_diskstream()->non_realtime_input_change();
                        
                        track->DiskstreamChanged.connect (mem_fun (this, &Session::resort_routes));
-                       track->set_remote_control_id (ntracks());
+                       track->set_remote_control_id (control_id);
+                       ++control_id;
 
                        new_routes.push_back (track);
                        ret.push_back (track);
+
                }
 
                catch (failed_constructor &err) {
                        error << _("Session: could not create new audio track.") << endmsg;
-                       // XXX should we delete the tracks already created? 
-                       ret.clear ();
-                       return ret;
+
+                       if (track) {
+                               /* we need to get rid of this, since the track failed to be created */
+                               /* XXX arguably, AudioTrack::AudioTrack should not do the Session::add_diskstream() */
+
+                               { 
+                                       RCUWriter<DiskstreamList> writer (diskstreams);
+                                       boost::shared_ptr<DiskstreamList> ds = writer.get_copy();
+                                       ds->remove (track->audio_diskstream());
+                               }
+                       }
+
+                       goto failed;
                }
-               
+
+               catch (AudioEngine::PortRegistrationFailure& pfe) {
+
+                       error << _("No more JACK ports are available. You will need to stop Ardour and restart JACK with ports if you need this many tracks.") << endmsg;
+
+                       if (track) {
+                               /* we need to get rid of this, since the track failed to be created */
+                               /* XXX arguably, AudioTrack::AudioTrack should not do the Session::add_diskstream() */
+
+                               { 
+                                       RCUWriter<DiskstreamList> writer (diskstreams);
+                                       boost::shared_ptr<DiskstreamList> ds = writer.get_copy();
+                                       ds->remove (track->audio_diskstream());
+                               }
+                       }
+
+                       goto failed;
+               }
+
                --how_many;
        }
 
+  failed:
        if (!new_routes.empty()) {
-               add_routes (new_routes, false);
-               save_state (_current_snapshot_name);
+               add_routes (new_routes, true);
        }
 
        return ret;
 }
 
+void
+Session::set_remote_control_ids ()
+{
+       RemoteModel m = Config->get_remote_model();
+
+       shared_ptr<RouteList> r = routes.reader ();
+
+       for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
+               if ( MixerOrdered == m) {                       
+                       long order = (*i)->order_key(N_("signal"));
+                       (*i)->set_remote_control_id( order+1 );
+               } else if ( EditorOrdered == m) {
+                       long order = (*i)->order_key(N_("editor"));
+                       (*i)->set_remote_control_id( order+1 );
+               } else if ( UserOrdered == m) {
+                       //do nothing ... only changes to remote id's are initiated by user 
+               }
+       }
+}
+
+
 Session::RouteList
 Session::new_audio_route (int input_channels, int output_channels, uint32_t how_many)
 {
@@ -1728,6 +1890,7 @@ Session::new_audio_route (int input_channels, int output_channels, uint32_t how_
        uint32_t n = 0;
        string port;
        RouteList ret;
+       uint32_t control_id;
 
        /* count existing audio busses */
 
@@ -1736,7 +1899,7 @@ Session::new_audio_route (int input_channels, int output_channels, uint32_t how_
 
                for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
                        if (dynamic_cast<AudioTrack*>((*i).get()) == 0) {
-                               if (!(*i)->hidden()) {
+                               if (!(*i)->hidden() && (*i)->name() != _("master")) {
                                        bus_id++;
                                }
                        }
@@ -1746,16 +1909,17 @@ Session::new_audio_route (int input_channels, int output_channels, uint32_t how_
        vector<string> physinputs;
        vector<string> physoutputs;
 
-       _engine.get_physical_outputs (physoutputs);
-       _engine.get_physical_inputs (physinputs);
+       _engine.get_physical_audio_outputs (physoutputs);
+       _engine.get_physical_audio_inputs (physinputs);
+       control_id = ntracks() + nbusses() + 1;
 
        while (how_many) {
 
                do {
-                       ++bus_id;
-
                        snprintf (bus_name, sizeof(bus_name), "Bus %" PRIu32, bus_id);
 
+                       bus_id++;
+
                        if (route_by_name (bus_name) == 0) {
                                break;
                        }
@@ -1769,14 +1933,15 @@ Session::new_audio_route (int input_channels, int output_channels, uint32_t how_
                                error << string_compose (_("cannot configure %1 in/%2 out configuration for new audio track"),
                                                         input_channels, output_channels)
                                      << endmsg;
+                               goto failure;
                        }
                        
-                       for (uint32_t x = 0; x < bus->n_inputs(); ++x) {
+                       for (uint32_t x = 0; n_physical_audio_inputs && x < bus->n_inputs(); ++x) {
                                
                                port = "";
-                               
+
                                if (Config->get_input_auto_connect() & AutoConnectPhysical) {
-                                       port = physinputs[((n+x)%n_physical_inputs)];
+                                               port = physinputs[((n+x)%n_physical_audio_inputs)];
                                } 
                                
                                if (port.length() && bus->connect_input (bus->input (x), port, this)) {
@@ -1784,12 +1949,12 @@ Session::new_audio_route (int input_channels, int output_channels, uint32_t how_
                                }
                        }
                        
-                       for (uint32_t x = 0; x < bus->n_outputs(); ++x) {
+                       for (uint32_t x = 0; n_physical_audio_outputs && x < bus->n_outputs(); ++x) {
                                
                                port = "";
                                
                                if (Config->get_output_auto_connect() & AutoConnectPhysical) {
-                                       port = physoutputs[((n+x)%n_physical_outputs)];
+                                       port = physoutputs[((n+x)%n_physical_audio_outputs)];
                                } else if (Config->get_output_auto_connect() & AutoConnectMaster) {
                                        if (_master_out) {
                                                port = _master_out->input (x%_master_out->n_inputs())->name();
@@ -1801,15 +1966,8 @@ Session::new_audio_route (int input_channels, int output_channels, uint32_t how_
                                }
                        }
                        
-                       if (_control_out) {
-                               vector<string> cports;
-                               uint32_t ni = _control_out->n_inputs();
-                               
-                               for (uint32_t n = 0; n < ni; ++n) {
-                                       cports.push_back (_control_out->input(n)->name());
-                               }
-                               bus->set_control_outs (cports);
-                       }
+                       bus->set_remote_control_id (control_id);
+                       ++control_id;
 
                        ret.push_back (bus);
                }
@@ -1817,16 +1975,21 @@ Session::new_audio_route (int input_channels, int output_channels, uint32_t how_
 
                catch (failed_constructor &err) {
                        error << _("Session: could not create new audio route.") << endmsg;
-                       ret.clear ();
-                       return ret;
+                       goto failure;
+               }
+
+               catch (AudioEngine::PortRegistrationFailure& pfe) {
+                       error << _("No more JACK ports are available. You will need to stop Ardour and restart JACK with ports if you need this many tracks.") << endmsg;
+                       goto failure;
                }
 
+
                --how_many;
        }
 
+  failure:
        if (!ret.empty()) {
-               add_routes (ret, false);
-               save_state (_current_snapshot_name);
+               add_routes (ret, true);
        }
 
        return ret;
@@ -1858,9 +2021,24 @@ Session::add_routes (RouteList& new_routes, bool save)
                
                if ((*x)->control()) {
                        _control_out = (*x);
-               }
+               } 
        }
 
+       if (_control_out && IO::connecting_legal) {
+
+               vector<string> cports;
+               uint32_t ni = _control_out->n_inputs();
+               uint32_t n;
+
+               for (n = 0; n < ni; ++n) {
+                       cports.push_back (_control_out->input(n)->name());
+               }
+
+               for (RouteList::iterator x = new_routes.begin(); x != new_routes.end(); ++x) {
+                       (*x)->set_control_outs (cports);
+               }
+       } 
+
        set_dirty();
 
        if (save) {
@@ -1874,17 +2052,19 @@ void
 Session::add_diskstream (boost::shared_ptr<Diskstream> dstream)
 {
        /* need to do this in case we're rolling at the time, to prevent false underruns */
-       dstream->do_refill_with_alloc();
+       dstream->do_refill_with_alloc ();
        
-       { 
+       dstream->set_block_size (current_block_size);
+
+       {
                RCUWriter<DiskstreamList> writer (diskstreams);
                boost::shared_ptr<DiskstreamList> ds = writer.get_copy();
                ds->push_back (dstream);
-       }
-
-       dstream->set_block_size (current_block_size);
+               /* writer goes out of scope, copies ds back to main */
+       } 
 
-       dstream->PlaylistChanged.connect (sigc::bind (mem_fun (*this, &Session::diskstream_playlist_changed), dstream));
+       dstream->PlaylistChanged.connect (sigc::bind (mem_fun (*this, &Session::diskstream_playlist_changed), 
+                                                     boost::weak_ptr<Diskstream> (dstream)));
        /* this will connect to future changes, and check the current length */
        diskstream_playlist_changed (dstream);
 
@@ -1941,17 +2121,20 @@ Session::remove_route (shared_ptr<Route> route)
                        boost::shared_ptr<DiskstreamList> d = dsl.get_copy();
                        d->remove (ds);
                }
+
+               diskstreams.flush ();
        }
 
        find_current_end ();
        
+       // We need to disconnect the routes inputs and outputs 
+
+       route->disconnect_inputs (0);
+       route->disconnect_outputs (0);
+       
        update_latency_compensation (false, false);
        set_dirty();
 
-       // We need to disconnect the routes inputs and outputs 
-       route->disconnect_inputs(NULL);
-       route->disconnect_outputs(NULL);
-       
        /* 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) */
@@ -2071,9 +2254,11 @@ Session::route_solo_changed (void* src, boost::weak_ptr<Route> wpr)
        modify_solo_mute (is_track, same_thing_soloed);
 
        if (signal) {
-               SoloActive (currently_soloing);
+               SoloActive (currently_soloing); /* EMIT SIGNAL */
        }
 
+       SoloChanged (); /* EMIT SIGNAL */
+
        set_dirty();
 }
 
@@ -2254,7 +2439,7 @@ Session::get_maximum_extent () const
        boost::shared_ptr<DiskstreamList> dsl = diskstreams.reader();
 
        for (DiskstreamList::const_iterator i = dsl->begin(); i != dsl->end(); ++i) {
-               Playlist* pl = (*i)->playlist();
+               boost::shared_ptr<Playlist> pl = (*i)->playlist();
                if ((me = pl->get_maximum_extent()) > max) {
                        max = me;
                }
@@ -2413,6 +2598,14 @@ Session::region_name (string& result, string base, bool newlevel) const
 
 void
 Session::add_region (boost::shared_ptr<Region> region)
+{
+       vector<boost::shared_ptr<Region> > v;
+       v.push_back (region);
+       add_regions (v);
+}
+               
+void
+Session::add_regions (vector<boost::shared_ptr<Region> >& new_regions)
 {
        boost::shared_ptr<AudioRegion> ar;
        boost::shared_ptr<AudioRegion> oar;
@@ -2421,43 +2614,52 @@ Session::add_region (boost::shared_ptr<Region> region)
        { 
                Glib::Mutex::Lock lm (region_lock);
 
-               if ((ar = boost::dynamic_pointer_cast<AudioRegion> (region)) != 0) {
-
-                       AudioRegionList::iterator x;
-
-                       for (x = audio_regions.begin(); x != audio_regions.end(); ++x) {
-
-                               oar = boost::dynamic_pointer_cast<AudioRegion> (x->second);
-
-                               if (ar->region_list_equivalent (oar)) {
-                                       break;
-                               }
-                       }
-
-                       if (x == audio_regions.end()) {
-
-                               pair<AudioRegionList::key_type,AudioRegionList::mapped_type> entry;
-
-                               entry.first = region->id();
-                               entry.second = ar;
+               for (vector<boost::shared_ptr<Region> >::iterator ii = new_regions.begin(); ii != new_regions.end(); ++ii) {
+               
+                       boost::shared_ptr<Region> region = *ii;
+                       
+                       if (region == 0) {
 
-                               pair<AudioRegionList::iterator,bool> x = audio_regions.insert (entry);
+                               error << _("Session::add_region() ignored a null region. Warning: you might have lost a region.") << endmsg;
 
+                       } else if ((ar = boost::dynamic_pointer_cast<AudioRegion> (region)) != 0) {
+                               
+                               AudioRegionList::iterator x;
                                
-                               if (!x.second) {
-                                       return;
+                               for (x = audio_regions.begin(); x != audio_regions.end(); ++x) {
+                                       
+                                       oar = boost::dynamic_pointer_cast<AudioRegion> (x->second);
+                                       
+                                       if (ar->region_list_equivalent (oar)) {
+                                               break;
+                                       }
                                }
+                               
+                               if (x == audio_regions.end()) {
+                                       
+                                       pair<AudioRegionList::key_type,AudioRegionList::mapped_type> entry;
+                                       
+                                       entry.first = region->id();
+                                       entry.second = ar;
+                                       
+                                       pair<AudioRegionList::iterator,bool> x = audio_regions.insert (entry);
+                                       
+                                       
+                                       if (!x.second) {
+                                               return;
+                                       }
+                                       
+                                       added = true;
+                               } 
 
-                               added = true;
-                       } 
-
-               } else {
-
-                       fatal << _("programming error: ")
-                             << X_("unknown region type passed to Session::add_region()")
-                             << endmsg;
-                       /*NOTREACHED*/
-
+                       } else {
+                               
+                               fatal << _("programming error: ")
+                                     << X_("unknown region type passed to Session::add_region()")
+                                     << endmsg;
+                               /*NOTREACHED*/
+                               
+                       }
                }
        }
 
@@ -2468,9 +2670,34 @@ Session::add_region (boost::shared_ptr<Region> region)
        set_dirty();
        
        if (added) {
-               region->GoingAway.connect (sigc::bind (mem_fun (*this, &Session::remove_region), boost::weak_ptr<Region>(region)));
-               region->StateChanged.connect (sigc::bind (mem_fun (*this, &Session::region_changed), boost::weak_ptr<Region>(region)));
-               AudioRegionAdded (ar); /* EMIT SIGNAL */
+
+               vector<boost::weak_ptr<AudioRegion> > v;
+               boost::shared_ptr<AudioRegion> first_ar;
+
+               for (vector<boost::shared_ptr<Region> >::iterator ii = new_regions.begin(); ii != new_regions.end(); ++ii) {
+
+                       boost::shared_ptr<Region> region = *ii;
+                       boost::shared_ptr<AudioRegion> ar;
+
+                       if (region == 0) {
+
+                               error << _("Session::add_region() ignored a null region. Warning: you might have lost a region.") << endmsg;
+
+                       } else if ((ar = boost::dynamic_pointer_cast<AudioRegion> (region)) != 0) {
+                               v.push_back (ar);
+
+                               if (!first_ar) {
+                                       first_ar = ar;
+                               }
+                       }
+
+                       region->StateChanged.connect (sigc::bind (mem_fun (*this, &Session::region_changed), boost::weak_ptr<Region>(region)));
+                       region->GoingAway.connect (sigc::bind (mem_fun (*this, &Session::remove_region), boost::weak_ptr<Region>(region)));
+               }
+               
+               if (!v.empty()) {
+                       AudioRegionsAdded (v); /* EMIT SIGNAL */
+               }
        }
 }
 
@@ -2527,12 +2754,12 @@ Session::remove_region (boost::weak_ptr<Region> weak_region)
        set_dirty();
 
        if (removed) {
-                AudioRegionRemoved(ar); /* EMIT SIGNAL */
+               AudioRegionRemoved (ar); /* EMIT SIGNAL */
        }
 }
 
 boost::shared_ptr<AudioRegion>
-Session::find_whole_file_parent (boost::shared_ptr<AudioRegion> child)
+Session::find_whole_file_parent (boost::shared_ptr<AudioRegion const> child)
 {
        AudioRegionList::iterator i;
        boost::shared_ptr<AudioRegion> region;
@@ -2563,32 +2790,38 @@ Session::find_equivalent_playlist_regions (boost::shared_ptr<Region> region, vec
 int
 Session::destroy_region (boost::shared_ptr<Region> region)
 {
-       boost::shared_ptr<AudioRegion> aregion;
-
-       if ((aregion = boost::dynamic_pointer_cast<AudioRegion> (region)) == 0) {
-               return 0;
-       }
-       
-       if (aregion->playlist()) {
-               aregion->playlist()->destroy_region (region);
-       }
-
        vector<boost::shared_ptr<Source> > srcs;
-       
-       for (uint32_t n = 0; n < aregion->n_channels(); ++n) {
-               srcs.push_back (aregion->source (n));
+               
+       {
+               boost::shared_ptr<AudioRegion> aregion;
+               
+               if ((aregion = boost::dynamic_pointer_cast<AudioRegion> (region)) == 0) {
+                       return 0;
+               }
+               
+               if (aregion->playlist()) {
+                       aregion->playlist()->destroy_region (region);
+               }
+               
+               for (uint32_t n = 0; n < aregion->n_channels(); ++n) {
+                       srcs.push_back (aregion->source (n));
+               }
        }
 
+       region->drop_references ();
+
        for (vector<boost::shared_ptr<Source> >::iterator i = srcs.begin(); i != srcs.end(); ++i) {
-               
-               if ((*i).use_count() == 1) {
-                       boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(*i);
 
+               if (!(*i)->used()) {
+                       boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(*i);
+                       
                        if (afs) {
                                (afs)->mark_for_remove ();
                        }
                        
                        (*i)->drop_references ();
+                       
+                       cerr << "source was not used by any playlist\n";
                }
        }
 
@@ -2621,6 +2854,9 @@ Session::remove_last_capture ()
        }
 
        destroy_regions (r);
+
+       save_state (_current_snapshot_name);
+
        return 0;
 }
 
@@ -2651,17 +2887,15 @@ Session::add_source (boost::shared_ptr<Source> source)
                        result = audio_sources.insert (entry);
                }
 
-               if (!result.second) {
-                       cerr << "\tNOT inserted ? " << result.second << endl;
+               if (result.second) {
+                       source->GoingAway.connect (sigc::bind (mem_fun (this, &Session::remove_source), boost::weak_ptr<Source> (source)));
+                       set_dirty();
                }
 
-               source->GoingAway.connect (sigc::bind (mem_fun (this, &Session::remove_source), boost::weak_ptr<Source> (source)));
-               set_dirty();
-               
-               SourceAdded (source); /* EMIT SIGNAL */
-       } else {
-               cerr << "\tNOT AUDIO FILE\n";
-       }
+               if (Config->get_auto_analyse_audio()) {
+                       Analyser::queue_source_for_analysis (source, false);
+               }
+       } 
 }
 
 void
@@ -2690,8 +2924,6 @@ Session::remove_source (boost::weak_ptr<Source> src)
                
                save_state (_current_snapshot_name);
        }
-       
-       SourceRemoved(source); /* EMIT SIGNAL */
 }
 
 boost::shared_ptr<Source>
@@ -2710,13 +2942,30 @@ Session::source_by_id (const PBD::ID& id)
        return source;
 }
 
-string
-Session::peak_path_from_audio_path (string audio_path) const
+
+boost::shared_ptr<Source>
+Session::source_by_path_and_channel (const Glib::ustring& path, uint16_t chn)
 {
-       string res;
+       Glib::Mutex::Lock lm (audio_source_lock);
+
+       for (AudioSourceList::iterator i = audio_sources.begin(); i != audio_sources.end(); ++i) {
+               boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(i->second);
 
+               if (afs && afs->path() == path && chn == afs->channel()) {
+                       return afs;
+               } 
+                      
+       }
+       return boost::shared_ptr<Source>();
+}
+
+Glib::ustring
+Session::peak_path (Glib::ustring base) const
+{
+       Glib::ustring res;
+       
        res = peak_dir ();
-       res += PBD::basename_nosuffix (audio_path);
+       res += base;
        res += ".peak";
 
        return res;
@@ -2877,6 +3126,7 @@ Session::audio_path_from_name (string name, uint32_t nchan, uint32_t chan, bool
                                } else {
                                        snprintf (buf, sizeof(buf), "%s/T%04d-%s.wav", spath.c_str(), cnt, legalized.c_str());
                                }
+
                        } else {
 
                                spath += '/';
@@ -2909,6 +3159,7 @@ Session::audio_path_from_name (string name, uint32_t nchan, uint32_t chan, bool
 
                if (cnt > limit) {
                        error << string_compose(_("There are already %1 recordings for %2, which I consider too many."), limit, name) << endmsg;
+                       destroy ();
                        throw failed_constructor();
                }
        }
@@ -2920,6 +3171,7 @@ Session::audio_path_from_name (string name, uint32_t nchan, uint32_t chan, bool
        string foo = buf;
 
        spath = discover_best_sound_dir ();
+       spath += '/';
 
        string::size_type pos = foo.find_last_of ('/');
        
@@ -2941,7 +3193,7 @@ Session::create_audio_source_for_session (AudioDiskstream& ds, uint32_t chan, bo
 
 /* Playlist management */
 
-Playlist *
+boost::shared_ptr<Playlist>
 Session::playlist_by_name (string name)
 {
        Glib::Mutex::Lock lm (playlist_lock);
@@ -2955,11 +3207,12 @@ Session::playlist_by_name (string name)
                        return* i;
                }
        }
-       return 0;
+
+       return boost::shared_ptr<Playlist>();
 }
 
 void
-Session::add_playlist (Playlist* playlist)
+Session::add_playlist (boost::shared_ptr<Playlist> playlist)
 {
        if (playlist->hidden()) {
                return;
@@ -2969,9 +3222,8 @@ Session::add_playlist (Playlist* playlist)
                Glib::Mutex::Lock lm (playlist_lock);
                if (find (playlists.begin(), playlists.end(), playlist) == playlists.end()) {
                        playlists.insert (playlists.begin(), playlist);
-                       // playlist->ref();
-                       playlist->InUse.connect (mem_fun (*this, &Session::track_playlist));
-                       playlist->GoingAway.connect (sigc::bind (mem_fun (*this, &Session::remove_playlist), playlist));
+                       playlist->InUse.connect (sigc::bind (mem_fun (*this, &Session::track_playlist), boost::weak_ptr<Playlist>(playlist)));
+                       playlist->GoingAway.connect (sigc::bind (mem_fun (*this, &Session::remove_playlist), boost::weak_ptr<Playlist>(playlist)));
                }
        }
 
@@ -2981,15 +3233,39 @@ Session::add_playlist (Playlist* playlist)
 }
 
 void
-Session::track_playlist (Playlist* pl, bool inuse)
+Session::get_playlists (vector<boost::shared_ptr<Playlist> >& s)
 {
+       { 
+               Glib::Mutex::Lock lm (playlist_lock);
+               for (PlaylistList::iterator i = playlists.begin(); i != playlists.end(); ++i) {
+                       s.push_back (*i);
+               }
+               for (PlaylistList::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
+                       s.push_back (*i);
+               }
+       }
+}
+
+void
+Session::track_playlist (bool inuse, boost::weak_ptr<Playlist> wpl)
+{
+       boost::shared_ptr<Playlist> pl(wpl.lock());
+
+       if (!pl) {
+               return;
+       }
+
        PlaylistList::iterator x;
 
+       if (pl->hidden()) {
+               /* its not supposed to be visible */
+               return;
+       }
+
        { 
                Glib::Mutex::Lock lm (playlist_lock);
 
                if (!inuse) {
-                       //cerr << "shifting playlist to unused: " << pl->name() << endl;
 
                        unused_playlists.insert (pl);
                        
@@ -2999,8 +3275,7 @@ Session::track_playlist (Playlist* pl, bool inuse)
 
                        
                } else {
-                       //cerr << "shifting playlist to used: " << pl->name() << endl;
-                       
+
                        playlists.insert (pl);
                        
                        if ((x = unused_playlists.find (pl)) != unused_playlists.end()) {
@@ -3011,20 +3286,24 @@ Session::track_playlist (Playlist* pl, bool inuse)
 }
 
 void
-Session::remove_playlist (Playlist* playlist)
+Session::remove_playlist (boost::weak_ptr<Playlist> weak_playlist)
 {
        if (_state_of_the_state & Deletion) {
                return;
        }
 
+       boost::shared_ptr<Playlist> playlist (weak_playlist.lock());
+
+       if (!playlist) {
+               return;
+       }
+
        { 
                Glib::Mutex::Lock lm (playlist_lock);
-               // cerr << "removing playlist: " << playlist->name() << endl;
 
                PlaylistList::iterator i;
 
                i = find (playlists.begin(), playlists.end(), playlist);
-
                if (i != playlists.end()) {
                        playlists.erase (i);
                }
@@ -3097,7 +3376,7 @@ Session::remove_empty_sounds ()
 {
        PathScanner scanner;
 
-       vector<string *>* possible_audiofiles = scanner (sound_dir(), "\\.(wav|aiff|caf|w64)$", false, true);
+       vector<string *>* possible_audiofiles = scanner (sound_dir(), "\\.(wav|aiff|caf|w64|L|R)$", false, true);
        
        Glib::Mutex::Lock lm (audio_source_lock);
        
@@ -3123,12 +3402,12 @@ Session::remove_empty_sounds ()
                        continue;
                }
                        
-               if (AudioFileSource::is_empty (*this, *(*i))) {
+               if (AudioFileSource::is_empty (*this, **i)) {
 
                        unlink ((*i)->c_str());
                        
-                       string peak_path = peak_path_from_audio_path (**i);
-                       unlink (peak_path.c_str());
+                       Glib::ustring peakpath = peak_path (PBD::basename_nosuffix (**i));
+                       unlink (peakpath.c_str());
                }
 
                delete* i;
@@ -3195,13 +3474,19 @@ void
 Session::graph_reordered ()
 {
        /* don't do this stuff if we are setting up connections
-          from a set_state() call.
+          from a set_state() call or creating new tracks.
        */
 
        if (_state_of_the_state & InitialConnecting) {
                return;
        }
 
+       /* every track/bus asked for this to be handled but it was deferred because
+          we were connecting. do it now.
+       */
+
+       request_input_change_handling ();
+
        resort_routes ();
 
        /* force all diskstreams to update their capture offset values to 
@@ -3279,18 +3564,28 @@ Session::remove_redirect (Redirect* redirect)
        Insert* insert;
        PortInsert* port_insert;
        PluginInsert* plugin_insert;
-
+       
        if ((insert = dynamic_cast<Insert *> (redirect)) != 0) {
                if ((port_insert = dynamic_cast<PortInsert *> (insert)) != 0) {
-                       _port_inserts.remove (port_insert);
+                       list<PortInsert*>::iterator x = find (_port_inserts.begin(), _port_inserts.end(), port_insert);
+                       if (x != _port_inserts.end()) {
+                               insert_bitset[port_insert->bit_slot()] = false;
+                               _port_inserts.erase (x);
+                       }
                } else if ((plugin_insert = dynamic_cast<PluginInsert *> (insert)) != 0) {
                        _plugin_inserts.remove (plugin_insert);
                } else {
-                       fatal << _("programming error: unknown type of Insert deleted!") << endmsg;
+                       fatal << string_compose (_("programming error: %1"),
+                                                X_("unknown type of Insert deleted!")) 
+                             << endmsg;
                        /*NOTREACHED*/
                }
        } else if ((send = dynamic_cast<Send *> (redirect)) != 0) {
-               _sends.remove (send);
+               list<Send*>::iterator x = find (_sends.begin(), _sends.end(), send);
+               if (x != _sends.end()) {
+                       send_bitset[send->bit_slot()] = false;
+                       _sends.erase (x);
+               }
        } else {
                fatal << _("programming error: unknown type of Redirect deleted!") << endmsg;
                /*NOTREACHED*/
@@ -3302,16 +3597,27 @@ Session::remove_redirect (Redirect* redirect)
 nframes_t
 Session::available_capture_duration ()
 {
-       float sample_bytes_on_disk;
+       float sample_bytes_on_disk = 4.0; // keep gcc happy
 
        switch (Config->get_native_file_data_format()) {
        case FormatFloat:
-               sample_bytes_on_disk = 4;
+               sample_bytes_on_disk = 4.0;
                break;
 
        case FormatInt24:
-               sample_bytes_on_disk = 3;
+               sample_bytes_on_disk = 3.0;
+               break;
+
+       case FormatInt16:
+               sample_bytes_on_disk = 2.0;
                break;
+
+       default: 
+               /* impossible, but keep some gcc versions happy */
+               fatal << string_compose (_("programming error: %1"),
+                                        X_("illegal native file data format"))
+                     << endmsg;
+               /*NOTREACHED*/
        }
 
        double scale = 4096.0 / sample_bytes_on_disk;
@@ -3376,18 +3682,36 @@ void
 Session::tempo_map_changed (Change ignored)
 {
        clear_clicks ();
+       
+       for (PlaylistList::iterator i = playlists.begin(); i != playlists.end(); ++i) {
+               (*i)->update_after_tempo_map_change ();
+       }
+
+       for (PlaylistList::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
+               (*i)->update_after_tempo_map_change ();
+       }
+
        set_dirty ();
 }
 
 void
 Session::ensure_passthru_buffers (uint32_t howmany)
 {
+       if (current_block_size == 0) {
+               return;
+       }
+
        while (howmany > _passthru_buffers.size()) {
                Sample *p;
 #ifdef NO_POSIX_MEMALIGN
                p =  (Sample *) malloc(current_block_size * sizeof(Sample));
 #else
-               posix_memalign((void **)&p,16,current_block_size * 4);
+               if (posix_memalign((void **)&p,CPU_CACHE_ALIGN,current_block_size * sizeof(Sample)) != 0) {
+                       fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
+                                                current_block_size, sizeof (Sample), strerror (errno))
+                             << endmsg;
+                       /*NOTREACHED*/
+               }
 #endif                 
                _passthru_buffers.push_back (p);
 
@@ -3396,7 +3720,12 @@ Session::ensure_passthru_buffers (uint32_t howmany)
 #ifdef NO_POSIX_MEMALIGN
                p =  (Sample *) malloc(current_block_size * sizeof(Sample));
 #else
-               posix_memalign((void **)&p,16,current_block_size * 4);
+               if (posix_memalign((void **)&p,CPU_CACHE_ALIGN,current_block_size * 4) != 0) {
+                       fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
+                                                current_block_size, sizeof (Sample), strerror (errno))
+                             << endmsg;
+                       /*NOTREACHED*/
+               }
 #endif                 
                memset (p, 0, sizeof (Sample) * current_block_size);
                _silent_buffers.push_back (p);
@@ -3406,7 +3735,7 @@ Session::ensure_passthru_buffers (uint32_t howmany)
 #ifdef NO_POSIX_MEMALIGN
                p =  (Sample *) malloc(current_block_size * sizeof(Sample));
 #else
-               posix_memalign((void **)&p,16,current_block_size * 4);
+               posix_memalign((void **)&p,CPU_CACHE_ALIGN,current_block_size * sizeof(Sample));
 #endif                 
                memset (p, 0, sizeof (Sample) * current_block_size);
                _send_buffers.push_back (p);
@@ -3415,20 +3744,68 @@ Session::ensure_passthru_buffers (uint32_t howmany)
        allocate_pan_automation_buffers (current_block_size, howmany, false);
 }
 
-string
-Session::next_send_name ()
+uint32_t
+Session::next_insert_id ()
 {
-       char buf[32];
-       snprintf (buf, sizeof (buf), "send %" PRIu32, ++send_cnt);
-       return buf;
+       /* this doesn't really loop forever. just think about it */
+
+       while (true) {
+               for (boost::dynamic_bitset<uint32_t>::size_type n = 0; n < insert_bitset.size(); ++n) {
+                       if (!insert_bitset[n]) {
+                               insert_bitset[n] = true;
+                               return n;
+                               
+                       }
+               }
+               
+               /* none available, so resize and try again */
+
+               insert_bitset.resize (insert_bitset.size() + 16, false);
+       }
 }
 
-string
-Session::next_insert_name ()
+uint32_t
+Session::next_send_id ()
 {
-       char buf[32];
-       snprintf (buf, sizeof (buf), "insert %" PRIu32, ++insert_cnt);
-       return buf;
+       /* this doesn't really loop forever. just think about it */
+
+       while (true) {
+               for (boost::dynamic_bitset<uint32_t>::size_type n = 0; n < send_bitset.size(); ++n) {
+                       if (!send_bitset[n]) {
+                               send_bitset[n] = true;
+                               return n;
+                               
+                       }
+               }
+               
+               /* none available, so resize and try again */
+
+               send_bitset.resize (send_bitset.size() + 16, false);
+       }
+}
+
+void
+Session::mark_send_id (uint32_t id)
+{
+       if (id >= send_bitset.size()) {
+               send_bitset.resize (id+16, false);
+       }
+       if (send_bitset[id]) {
+               warning << string_compose (_("send ID %1 appears to be in use already"), id) << endmsg;
+       }
+       send_bitset[id] = true;
+}
+
+void
+Session::mark_insert_id (uint32_t id)
+{
+       if (id >= insert_bitset.size()) {
+               insert_bitset.resize (id+16, false);
+       }
+       if (insert_bitset[id]) {
+               warning << string_compose (_("insert ID %1 appears to be in use already"), id) << endmsg;
+       }
+       insert_bitset[id] = true;
 }
 
 /* Named Selection management */
@@ -3453,9 +3830,13 @@ Session::add_named_selection (NamedSelection* named_selection)
                named_selections.insert (named_selections.begin(), named_selection);
        }
 
+       for (list<boost::shared_ptr<Playlist> >::iterator i = named_selection->playlists.begin(); i != named_selection->playlists.end(); ++i) {
+               add_playlist (*i);
+       }
+
        set_dirty();
 
-        NamedSelectionAdded (); /* EMIT SIGNAL */
+       NamedSelectionAdded (); /* EMIT SIGNAL */
 }
 
 void
@@ -3505,12 +3886,6 @@ Session::route_name_unique (string n) const
        return true;
 }
 
-int
-Session::cleanup_audio_file_source (boost::shared_ptr<AudioFileSource> fs)
-{
-       return fs->move_to_trash (dead_sound_dir_name);
-}
-
 uint32_t
 Session::n_playlists () const
 {
@@ -3568,7 +3943,7 @@ Session::write_one_audio_track (AudioTrack& track, nframes_t start, nframes_t le
                               bool overwrite, vector<boost::shared_ptr<AudioSource> >& srcs, InterThreadInfo& itt)
 {
        int ret = -1;
-       Playlist* playlist;
+       boost::shared_ptr<Playlist> playlist;
        boost::shared_ptr<AudioFileSource> fsource;
        uint32_t x;
        char buf[PATH_MAX+1];
@@ -3638,11 +4013,15 @@ Session::write_one_audio_track (AudioTrack& track, nframes_t start, nframes_t le
 #ifdef NO_POSIX_MEMALIGN
                b =  (Sample *) malloc(chunk_size * sizeof(Sample));
 #else
-               posix_memalign((void **)&b,16,chunk_size * 4);
+               posix_memalign((void **)&b,4096,chunk_size * sizeof(Sample));
 #endif                 
                buffers.push_back (b);
        }
 
+       for (vector<boost::shared_ptr<AudioSource> >::iterator src=srcs.begin(); src != srcs.end(); ++src) {
+               (*src)->prepare_for_peakfile_writes ();
+       }
+                       
        while (to_do && !itt.cancel) {
                
                this_chunk = min (to_do, chunk_size);
@@ -3681,22 +4060,14 @@ Session::write_one_audio_track (AudioTrack& track, nframes_t start, nframes_t le
 
                        if (afs) {
                                afs->update_header (position, *xnow, now);
+                               afs->flush_header ();
                        }
                }
                
-               /* build peakfile for new source */
-               
-               for (vector<boost::shared_ptr<AudioSource> >::iterator src=srcs.begin(); src != srcs.end(); ++src) {
-                       boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(*src);
-                       if (afs) {
-                               afs->build_peaks ();
-                       }
-               }
-
                /* construct a region to represent the bounced material */
 
                boost::shared_ptr<Region> aregion = RegionFactory::create (srcs, 0, srcs.front()->length(), 
-                                                                          region_name_from_path (srcs.front()->name()));
+                                                                          region_name_from_path (srcs.front()->name(), true));
 
                ret = 0;
        }
@@ -3712,6 +4083,11 @@ Session::write_one_audio_track (AudioTrack& track, nframes_t start, nframes_t le
 
                        (*src)->drop_references ();
                }
+
+       } else {
+               for (vector<boost::shared_ptr<AudioSource> >::iterator src = srcs.begin(); src != srcs.end(); ++src) {
+                       (*src)->done_with_peakfile_writes ();
+               }
        }
 
        for (vector<Sample*>::iterator i = buffers.begin(); i != buffers.end(); ++i) {
@@ -3728,9 +4104,37 @@ Session::write_one_audio_track (AudioTrack& track, nframes_t start, nframes_t le
 vector<Sample*>&
 Session::get_silent_buffers (uint32_t howmany)
 {
+       if (howmany > _silent_buffers.size()) {
+
+               error << string_compose (_("Programming error: get_silent_buffers() called for %1 buffers but only %2 exist"),
+                                        howmany, _silent_buffers.size()) << endmsg;
+
+               if (howmany > 1000) {
+                       cerr << "ABSURD: more than 1000 silent buffers requested!\n";
+                       abort ();
+               }
+               
+               while (howmany > _silent_buffers.size()) {
+                       Sample *p = 0;
+                       
+#ifdef NO_POSIX_MEMALIGN
+                       p =  (Sample *) malloc(current_block_size * sizeof(Sample));
+#else
+                       if (posix_memalign((void **)&p,CPU_CACHE_ALIGN,current_block_size * 4) != 0) {
+                               fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
+                                                        current_block_size, sizeof (Sample), strerror (errno))
+                                     << endmsg;
+                               /*NOTREACHED*/
+                       }
+#endif                 
+                       _silent_buffers.push_back (p);
+               }
+       }
+
        for (uint32_t i = 0; i < howmany; ++i) {
                memset (_silent_buffers[i], 0, sizeof (Sample) * current_block_size);
        }
+
        return _silent_buffers;
 }
 
@@ -3776,3 +4180,19 @@ Session::compute_initial_length ()
        return _engine.frame_rate() * 60 * 5;
 }
 
+void
+Session::sync_order_keys ()
+{
+       if (!Config->get_sync_all_route_ordering()) {
+               /* leave order keys as they are */
+               return;
+       }
+
+       boost::shared_ptr<RouteList> r = routes.reader ();
+
+       for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
+               (*i)->sync_order_keys ();
+       }
+
+       Route::SyncOrderKeys (); // EMIT SIGNAL
+}