a) start at creating ControlProtocol objects

b) basic support for Frontier Design Tranzport
c) probably broke some aspect of existing generic MIDI feedback


git-svn-id: svn://localhost/trunk/ardour2@441 d708f5d6-7413-0410-9779-e7cbd77b26cf

22 files changed, 1181 insertions, 149 deletions

diff --git a/SConstruct b/SConstruct
index aab1b830b5..0806ac4d26 100644
--- a/SConstruct
+++ b/SConstruct
@@ -389,6 +389,8 @@ libraries['libgnomecanvas2'].ParseConfig ('pkg-config --cflags --libs libgnomeca
 libraries['glade2'] = LibraryInfo()
 libraries['glade2'].ParseConfig ('pkg-config --cflags --libs libglade-2.0')
 
+libraries['usb'] = LibraryInfo (LIBS='usb')
+
 #libraries['flowcanvas'] = LibraryInfo(LIBS='flowcanvas', LIBPATH='#/libs/flowcanvas', CPPPATH='#libs/flowcanvas')
 
 libraries['ardour'] = LibraryInfo (LIBS='ardour', LIBPATH='#libs/ardour', CPPPATH='#libs/ardour')
diff --git a/ardour.rc.in b/ardour.rc.in
index 55948d4f74..96e0fe0a5b 100644
--- a/ardour.rc.in
+++ b/ardour.rc.in
@@ -26,6 +26,7 @@
     <Option name="auditioner-right-out" value="%JACK_INPUT%2"/>
     <Option name="quieten-at-speed" value="1.000000"/>
     <Option name="use-vst" value="yes"/>
+    <Option name="use-tranzport" value="yes"/>
   </Config>
   <extra>
     <Keyboard edit-button="3" edit-modifier="4" delete-button="3" delete-modifier="1" snap-modifier="32"/>
diff --git a/gtk2_ardour/SConscript b/gtk2_ardour/SConscript
index 38cac52b40..0ca9def5fe 100644
--- a/gtk2_ardour/SConscript
+++ b/gtk2_ardour/SConscript
@@ -24,6 +24,7 @@ gtkardour.Append(POTFILE=domain + '.pot')
 
 gtkardour.Merge ([
     libraries['ardour'],
+    libraries['usb'],
     libraries['gtkmm2ext'],
 #    libraries['flowcanvas'],
     libraries['midi++2'],
diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index 2b7b87f93b..79c81992dc 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -1261,14 +1261,6 @@ ARDOUR_UI::map_transport_state ()
 }
 
 void
-ARDOUR_UI::send_all_midi_feedback ()
-{
-	if (session) {
-		session->send_all_midi_feedback();
-	}
-}
-
-void
 ARDOUR_UI::allow_local_only ()
 {
 
diff --git a/gtk2_ardour/ardour_ui_ed.cc b/gtk2_ardour/ardour_ui_ed.cc
index 9c1ae4c45f..e658aa23e9 100644
--- a/gtk2_ardour/ardour_ui_ed.cc
+++ b/gtk2_ardour/ardour_ui_ed.cc
@@ -286,8 +286,6 @@ ARDOUR_UI::install_actions ()
 	act = ActionManager::register_toggle_action (transport_actions, X_("ToggleTimeMaster"), _("Time\nmaster"), mem_fun(*this, &ARDOUR_UI::toggle_time_master));
 	ActionManager::session_sensitive_actions.push_back (act);
 
-	act = ActionManager::register_action (common_actions, X_("SendAllMidiFeedback"), _("Send All Midi Feedback"), mem_fun(*this, &ARDOUR_UI::send_all_midi_feedback));
-	ActionManager::session_sensitive_actions.push_back (act);
 	act = ActionManager::register_action (common_actions, X_("ToggleRecordEnableTrack1"), _("Toggle Record Enable Track1"), bind (mem_fun(*this, &ARDOUR_UI::toggle_record_enable),  0U));
 	ActionManager::session_sensitive_actions.push_back (act);
 	act = ActionManager::register_action (common_actions, X_("ToggleRecordEnableTrack2"), _("Toggle Record Enable Track2"), bind (mem_fun(*this, &ARDOUR_UI::toggle_record_enable),  1U));
diff --git a/gtk2_ardour/audio_time_axis.cc b/gtk2_ardour/audio_time_axis.cc
index b4a5413d04..6bb6fc45ce 100644
--- a/gtk2_ardour/audio_time_axis.cc
+++ b/gtk2_ardour/audio_time_axis.cc
@@ -141,6 +141,15 @@ AudioTimeAxisView::AudioTimeAxisView (PublicEditor& ed, Session& sess, Route& rt
 
 	_route.panner().Changed.connect (mem_fun(*this, &AudioTimeAxisView::update_pans));
 
+	solo_button->signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+	mute_button->signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+	rec_enable_button->signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+	playlist_button.signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+	automation_button.signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+	size_button.signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+	visual_button.signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+	hide_button.signal_button_press_event().connect (mem_fun (*this, &AudioTimeAxisView::select_me), false);
+
 	solo_button->signal_button_press_event().connect (mem_fun(*this, &RouteUI::solo_press), false);
 	solo_button->signal_button_release_event().connect (mem_fun(*this, &RouteUI::solo_release), false);
 	mute_button->signal_button_press_event().connect (mem_fun(*this, &RouteUI::mute_press), false);
@@ -1960,3 +1969,10 @@ AudioTimeAxisView::color_handler (ColorID id, uint32_t val)
 		break;
 	}
 }
+
+bool
+AudioTimeAxisView::select_me (GdkEventButton* ev)
+{
+	editor.get_selection().add (this);
+	return false;
+}
diff --git a/gtk2_ardour/audio_time_axis.h b/gtk2_ardour/audio_time_axis.h
index 0e2eab66c9..d1fbde3e9c 100644
--- a/gtk2_ardour/audio_time_axis.h
+++ b/gtk2_ardour/audio_time_axis.h
@@ -315,6 +315,7 @@ class AudioTimeAxisView : public RouteUI, public TimeAxisView
 	void map_frozen ();
 
 	void color_handler (ColorID, uint32_t);
+	bool select_me (GdkEventButton*);
 };
 
 #endif /* __ardour_trackview_h__ */
diff --git a/gtk2_ardour/editor_ops.cc b/gtk2_ardour/editor_ops.cc
index f78ecbbcbe..03ea5ac456 100644
--- a/gtk2_ardour/editor_ops.cc
+++ b/gtk2_ardour/editor_ops.cc
@@ -1394,10 +1394,6 @@ Editor::set_selection_from_loop()
 void
 Editor::set_selection_from_range (Location& loc)
 {
-        if (clicked_trackview == 0) {
-		return;
-	}
-	
 	begin_reversible_command (_("set selection from range"));
 	selection->set (0, loc.start(), loc.end());
 	commit_reversible_command ();
@@ -1408,13 +1404,8 @@ Editor::set_selection_from_range (Location& loc)
 void
 Editor::select_all_selectables_using_time_selection ()
 {
-
 	list<Selectable *> touched;
 
-	if (clicked_trackview == 0) {
-		return;
-	}
-
 	if (selection->time.empty()) {
 		return;
 	}
@@ -1432,10 +1423,10 @@ Editor::select_all_selectables_using_time_selection ()
 		}
 		(*iter)->get_selectables (start, end - 1, 0, DBL_MAX, touched);
 	}
+
 	begin_reversible_command (_("select all from range"));
 	selection->set (touched);
 	commit_reversible_command ();
-
 }
 
 
@@ -1491,18 +1482,19 @@ Editor::select_all_selectables_using_cursor (Cursor *cursor, bool after)
 	list<Selectable *> touched;
 
 	if (after) {
-	  begin_reversible_command (_("select all after cursor"));
-	  start = cursor->current_frame ;
-	  end = session->current_end_frame();
+		begin_reversible_command (_("select all after cursor"));
+		start = cursor->current_frame ;
+		end = session->current_end_frame();
 	} else {
-	  if (cursor->current_frame > 0) {
-	    begin_reversible_command (_("select all before cursor"));
-	    start = 0;
-	    end = cursor->current_frame - 1;
-	  } else {
-	    return;
-	  }
+		if (cursor->current_frame > 0) {
+			begin_reversible_command (_("select all before cursor"));
+			start = 0;
+			end = cursor->current_frame - 1;
+		} else {
+			return;
+		}
 	}
+
 	for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
 		if ((*iter)->hidden()) {
 			continue;
@@ -1520,19 +1512,21 @@ Editor::select_all_selectables_between_cursors (Cursor *cursor, Cursor *other_cu
 	jack_nframes_t end;
 	list<Selectable *> touched;
 	bool  other_cursor_is_first = cursor->current_frame > other_cursor->current_frame;
+
 	if (cursor->current_frame == other_cursor->current_frame) {
-	  return;
+		return;
 	}
-	begin_reversible_command (_("select all between cursors"));
-	if ( other_cursor_is_first) {
-	    start = other_cursor->current_frame;
-	    end = cursor->current_frame - 1;
 
+	begin_reversible_command (_("select all between cursors"));
+	if (other_cursor_is_first) {
+		start = other_cursor->current_frame;
+		end = cursor->current_frame - 1;
+		
 	} else {
-	    start = cursor->current_frame;
-	    end = other_cursor->current_frame - 1;
+		start = cursor->current_frame;
+		end = other_cursor->current_frame - 1;
 	}
-
+	
 	for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
 		if ((*iter)->hidden()) {
 			continue;
diff --git a/libs/ardour/SConscript b/libs/ardour/SConscript
index dd9de55929..8bf62b9c01 100644
--- a/libs/ardour/SConscript
+++ b/libs/ardour/SConscript
@@ -31,6 +31,7 @@ automation.cc
 automation_event.cc
 configuration.cc
 connection.cc
+control_protocol.cc
 crossfade.cc
 curve.cc
 cycle_timer.cc
@@ -41,6 +42,7 @@ externalsource.cc
 filesource.cc
 gain.cc
 gdither.cc
+generic_midi_control_protocol.cc
 globals.cc
 import.cc
 insert.cc
@@ -67,6 +69,7 @@ send.cc
 session.cc
 session_butler.cc
 session_click.cc
+session_control.cc
 session_events.cc
 session_export.cc
 session_feedback.cc
@@ -82,6 +85,7 @@ source.cc
 state_manager.cc
 stateful.cc
 tempo.cc
+tranzport_control_protocol.cc
 utils.cc
 version.cc
 mix.cc
@@ -178,7 +182,7 @@ ardour.Merge ([
 	     libraries['sigc2'],
 	     libraries['pbd3'],
 	     libraries['soundtouch'],
-	     libraries['midi++2']
+	     libraries['midi++2'],
 	     ])
 
 
diff --git a/libs/ardour/ardour/configuration_vars.h b/libs/ardour/ardour/configuration_vars.h
index 7d3a9db8b8..d54264c1c0 100644
--- a/libs/ardour/ardour/configuration_vars.h
+++ b/libs/ardour/ardour/configuration_vars.h
@@ -33,11 +33,12 @@ CONFIG_VARIABLE(bool, timecode_source_is_synced, "timecode-source-is-synced", tr
 CONFIG_VARIABLE(bool, latched_record_enable, "latched-record-enable", false)
 CONFIG_VARIABLE(bool, use_vst, "use-vst", true)
 CONFIG_VARIABLE(bool, quieten_at_speed, "quieten-at-speed", true)
-CONFIG_VARIABLE(uint32_t, midi_feedback_interval_ms,  "midi-feedback-interval-ms", 100)
+CONFIG_VARIABLE(uint32_t, feedback_interval_ms,  "feedback-interval-ms", 100)
 CONFIG_VARIABLE(uint32_t, disk_choice_space_threshold,  "disk-choice-space-threshold", 57600000)
 CONFIG_VARIABLE(uint32_t, destructive_xfade_msecs,  "destructive-xfade-msecs", 2)
 CONFIG_VARIABLE(SampleFormat, native_file_data_format,  "native-file-data-format", ARDOUR::FormatFloat)
 CONFIG_VARIABLE(HeaderFormat, native_file_header_format,  "native-file-header-format", ARDOUR::WAVE)
+CONFIG_VARIABLE(bool, use_tranzport,  "use-tranzport", false)
 
 /* these variables have custom set() methods */
 
diff --git a/libs/ardour/ardour/control_protocol.h b/libs/ardour/ardour/control_protocol.h
new file mode 100644
index 0000000000..c0869fad9a
--- /dev/null
+++ b/libs/ardour/ardour/control_protocol.h
@@ -0,0 +1,45 @@
+#ifndef ardour_control_protocols_h
+#define ardour_control_protocols_h
+
+#include <string>
+#include <list>
+#include <sigc++/sigc++.h>
+
+namespace ARDOUR {
+
+class Route;
+class Session;
+
+class ControlProtocol : sigc::trackable {
+  public:
+	ControlProtocol (Session&, std::string name);
+	virtual ~ControlProtocol();
+
+	virtual int init () { return 0; }
+	virtual bool active() const = 0;
+
+	enum SendWhat {
+		SendRoute,
+		SendGlobal
+	};
+
+	std::string name() const { return _name; }
+
+	void set_send (SendWhat);
+
+	bool send() const { return _send != 0; }
+	bool send_route_feedback () const { return _send & SendRoute; }
+	bool send_global_feedback () const { return _send & SendGlobal; }
+
+	virtual void send_route_feedback (std::list<Route*>&) {}
+	virtual void send_global_feedback () {}
+
+  protected:
+	ARDOUR::Session& session;
+	SendWhat _send;
+	std::string _name;
+};
+
+}
+
+#endif // ardour_control_protocols_h
diff --git a/libs/ardour/ardour/generic_midi_control_protocol.h b/libs/ardour/ardour/generic_midi_control_protocol.h
new file mode 100644
index 0000000000..75b514f016
--- /dev/null
+++ b/libs/ardour/ardour/generic_midi_control_protocol.h
@@ -0,0 +1,31 @@
+#ifndef ardour_generic_midi_control_protocol_h
+#define ardour_generic_midi_control_protocol_h
+
+#include <ardour/control_protocol.h>
+
+namespace MIDI {
+	class Port;
+}
+
+namespace ARDOUR {
+
+class GenericMidiControlProtocol : public ControlProtocol {
+  public:
+	GenericMidiControlProtocol (Session&);
+	virtual ~GenericMidiControlProtocol();
+
+	bool active() const;
+
+	void set_port (MIDI::Port*);
+	MIDI::Port* port () const { return _port; }
+
+	void send_route_feedback (std::list<Route*>&);
+	
+  private:
+	void route_feedback (ARDOUR::Route&, bool);
+	MIDI::Port* _port;
+};
+
+}
+
+#endif // ardour_generic_midi_control_protocol_h
diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index 1e25c5f38b..1f6f464d24 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -22,12 +22,7 @@
 #define __ardour_session_h__
 
 #include <string>
-#if __GNUC__ >= 3
-#include <ext/slist>
-using __gnu_cxx::slist;
-#else
-#include <slist.h>
-#endif
+#include <list>
 #include <map>
 #include <vector>
 #include <set>
@@ -84,6 +79,8 @@ class AudioRegion;
 class Region;
 class Playlist;
 class VSTPlugin;
+class ControlProtocol;
+class GenericMidiControlProtocol;
 
 struct AudioExportSpecification;
 struct RouteGroup;
@@ -283,7 +280,7 @@ class Session : public sigc::trackable, public Stateful
 	void foreach_diskstream (void (DiskStream::*func)(void));
 	template<class T> void foreach_diskstream (T *obj, void (T::*func)(DiskStream&));
 
-	typedef slist<Route *> RouteList;
+	typedef list<Route *> RouteList;
 
 	RouteList get_routes() const {
 		RWLockMonitor rlock (route_lock, false, __LINE__, __FILE__);
@@ -303,6 +300,7 @@ class Session : public sigc::trackable, public Stateful
 	template<class T, class A> void foreach_route (T *obj, void (T::*func)(Route&, A), A arg);
 
 	Route *route_by_name (string);
+	Route *route_by_remote_id (uint32_t id);
 
 	bool route_name_unique (string) const;
 
@@ -407,7 +405,9 @@ class Session : public sigc::trackable, public Stateful
 		CrossfadingModel,
 		SeamlessLoop,
 		MidiFeedback,
-		MidiControl
+		MidiControl,
+		TranzportControl,
+		Feedback
 	};
 
 	sigc::signal<void,ControlType> ControlChanged;
@@ -428,6 +428,7 @@ class Session : public sigc::trackable, public Stateful
 	void set_do_not_record_plugins (bool yn);
 	void set_crossfades_active (bool yn);
 	void set_seamless_loop (bool yn);
+	void set_feedback (bool yn);
 
 	bool get_auto_play () const { return auto_play; }
 	bool get_auto_input () const { return auto_input; }
@@ -444,6 +445,8 @@ class Session : public sigc::trackable, public Stateful
 	bool get_midi_control () const;
 	bool get_do_not_record_plugins () const { return do_not_record_plugins; }
 	bool get_crossfades_active () const { return crossfades_active; }
+	bool get_feedback() const;
+	bool get_tranzport_control() const;
 
 	bool get_input_auto_connect () const;
 	AutoConnectOption get_output_auto_connect () const { return output_auto_connect; }
@@ -815,7 +818,6 @@ class Session : public sigc::trackable, public Stateful
 	bool get_trace_midi_output(MIDI::Port *port = 0);
 	
 	void send_midi_message (MIDI::Port * port, MIDI::eventType ev, MIDI::channel_t, MIDI::EventTwoBytes);
-	void send_all_midi_feedback ();
 
 	void deliver_midi (MIDI::Port*, MIDI::byte*, int32_t size);
 
@@ -1133,9 +1135,9 @@ class Session : public sigc::trackable, public Stateful
 	bool send_mtc;
 	bool send_mmc;
 	bool mmc_control;
-	bool midi_feedback;
 	bool midi_control;
-	
+	bool midi_feedback;
+
 	RingBuffer<Event*> pending_events;
 
 	void hookup_io ();
@@ -1598,9 +1600,9 @@ class Session : public sigc::trackable, public Stateful
 
 	/* INSERT AND SEND MANAGEMENT */
 	
-	slist<PortInsert *>   _port_inserts;
-	slist<PluginInsert *> _plugin_inserts;
-	slist<Send *>         _sends;
+	list<PortInsert *>   _port_inserts;
+	list<PluginInsert *> _plugin_inserts;
+	list<Send *>         _sends;
 	uint32_t          send_cnt;
 	uint32_t          insert_cnt;
 
@@ -1768,6 +1770,12 @@ class Session : public sigc::trackable, public Stateful
 
 	LayerModel layer_model;
 	CrossfadeModel xfade_model;
+
+	/* control protocols */
+
+	vector<ControlProtocol*> control_protocols;
+	GenericMidiControlProtocol* generic_midi_control_protocol;
+	void initialize_control ();
 };
 
 }; /* namespace ARDOUR */
diff --git a/libs/ardour/ardour/tranzport_control_protocol.h b/libs/ardour/ardour/tranzport_control_protocol.h
new file mode 100644
index 0000000000..448d803c36
--- /dev/null
+++ b/libs/ardour/ardour/tranzport_control_protocol.h
@@ -0,0 +1,142 @@
+#ifndef ardour_tranzport_control_protocol_h
+#define ardour_tranzport_control_protocol_h
+
+#include <pthread.h>
+#include <usb.h>
+#include <ardour/control_protocol.h>
+#include <ardour/types.h>
+
+namespace ARDOUR {
+
+class TranzportControlProtocol : public ControlProtocol {
+  public:
+	TranzportControlProtocol (Session&);
+	virtual ~TranzportControlProtocol();
+
+	int init ();
+	bool active() const;
+
+	void send_route_feedback (std::list<Route*>&);
+	void send_global_feedback ();
+
+  private:
+	static const int VENDORID = 0x165b;
+	static const int PRODUCTID = 0x8101;
+	static const int READ_ENDPOINT  = 0x81;
+	static const int WRITE_ENDPOINT = 0x02;
+	const static int STATUS_OFFLINE  = 0xff;
+	const static int STATUS_ONLINE = 0x01;
+
+	enum LightID {
+		LightRecord = 0,
+		LightTrackrec,
+		LightTrackmute,
+		LightTracksolo,
+		LightAnysolo,
+		LightLoop,
+		LightPunch
+	};
+
+	enum ButtonID {
+		ButtonBattery = 0x00004000,
+		ButtonBacklight = 0x00008000,
+		ButtonTrackLeft = 0x04000000,
+		ButtonTrackRight = 0x40000000,
+		ButtonTrackRec = 0x00040000,
+		ButtonTrackMute = 0x00400000,
+		ButtonTrackSolo = 0x00000400,
+		ButtonUndo = 0x80000000,
+		ButtonIn = 0x02000000,
+		ButtonOut = 0x20000000,
+		ButtonPunch = 0x00800000,
+		ButtonLoop = 0x00080000,
+		ButtonPrev = 0x00020000,
+		ButtonAdd = 0x00200000,
+		ButtonNext = 0x00000200,
+		ButtonRewind = 0x01000000,
+		ButtonFastForward = 0x10000000,
+		ButtonStop = 0x00010000,
+		ButtonPlay = 0x00100000,
+		ButtonRecord = 0x00000100,
+		ButtonShift = 0x08000000
+	};
+		
+	pthread_t       thread;
+	uint32_t        buttonmask;
+	uint32_t        timeout;
+	uint8_t        _datawheel;
+	uint8_t        _device_status;
+	usb_dev_handle* udev;
+	Route*          current_route;
+	uint32_t        current_track_id;
+
+	bool     last_negative;
+	uint32_t last_hrs;
+	uint32_t last_mins;
+	uint32_t last_secs;
+	uint32_t last_frames;
+	jack_nframes_t last_where;
+
+	int open ();
+	int read ();
+	int write (uint8_t* cmd);
+	int close ();
+
+	int open_core (struct usb_device*);
+
+	void lcd_clear ();
+	int  lcd_write (uint8_t cell, const char *text);
+
+	int  light_on (LightID);
+	int  light_off (LightID);
+
+	void show_current_track ();
+
+	static void* _thread_work (void* arg);
+	void* thread_work ();
+
+	void button_event_battery_press (bool shifted);
+	void button_event_battery_release (bool shifted);
+	void button_event_backlight_press (bool shifted);
+	void button_event_backlight_release (bool shifted);
+	void button_event_trackleft_press (bool shifted);
+	void button_event_trackleft_release (bool shifted);
+	void button_event_trackright_press (bool shifted);
+	void button_event_trackright_release (bool shifted);
+	void button_event_trackrec_press (bool shifted);
+	void button_event_trackrec_release (bool shifted);
+	void button_event_trackmute_press (bool shifted);
+	void button_event_trackmute_release (bool shifted);
+	void button_event_tracksolo_press (bool shifted);
+	void button_event_tracksolo_release (bool shifted);
+	void button_event_undo_press (bool shifted);
+	void button_event_undo_release (bool shifted);
+	void button_event_in_press (bool shifted);
+	void button_event_in_release (bool shifted);
+	void button_event_out_press (bool shifted);
+	void button_event_out_release (bool shifted);
+	void button_event_punch_press (bool shifted);
+	void button_event_punch_release (bool shifted);
+	void button_event_loop_press (bool shifted);
+	void button_event_loop_release (bool shifted);
+	void button_event_prev_press (bool shifted);
+	void button_event_prev_release (bool shifted);
+	void button_event_add_press (bool shifted);
+	void button_event_add_release (bool shifted);
+	void button_event_next_press (bool shifted);
+	void button_event_next_release (bool shifted);
+	void button_event_rewind_press (bool shifted);
+	void button_event_rewind_release (bool shifted);
+	void button_event_fastforward_press (bool shifted);
+	void button_event_fastforward_release (bool shifted);
+	void button_event_stop_press (bool shifted);
+	void button_event_stop_release (bool shifted);
+	void button_event_play_press (bool shifted);
+	void button_event_play_release (bool shifted);
+	void button_event_record_press (bool shifted);
+	void button_event_record_release (bool shifted);
+};
+
+} // namespace
+
+#endif // ardour_tranzport_control_protocol_h
diff --git a/libs/ardour/generic_midi_control_protocol.cc b/libs/ardour/generic_midi_control_protocol.cc
new file mode 100644
index 0000000000..f9b9750982
--- /dev/null
+++ b/libs/ardour/generic_midi_control_protocol.cc
@@ -0,0 +1,54 @@
+#include <ardour/generic_midi_control_protocol.h>
+#include <ardour/route.h>
+#include <ardour/session.h>
+
+using namespace ARDOUR;
+
+#include "i18n.h"
+
+GenericMidiControlProtocol::GenericMidiControlProtocol (Session& s)
+	: ControlProtocol  (s, _("GenericMIDI"))
+{
+	_port = 0;
+}
+
+GenericMidiControlProtocol::~GenericMidiControlProtocol ()
+{
+}
+
+void
+GenericMidiControlProtocol::set_port (MIDI::Port* p)
+{
+	_port = p;
+}
+
+void 
+GenericMidiControlProtocol::send_route_feedback (list<Route*>& routes)
+{
+	if (_port != 0) {
+
+		const int32_t bufsize = 16 * 1024;
+		int32_t bsize = bufsize;
+		MIDI::byte* buf = new MIDI::byte[bufsize];
+		MIDI::byte* end = buf;
+		
+		for (list<Route*>::iterator r = routes.begin(); r != routes.end(); ++r) {
+		end = (*r)->write_midi_feedback (end, bsize);
+		}
+		
+		if (end == buf) {
+			delete [] buf;
+			return;
+		} 
+		
+		session.deliver_midi (_port, buf, (int32_t) (end - buf));
+		//cerr << "MIDI feedback: wrote " << (int32_t) (end - buf) << " to midi port\n";
+	}
+}
+
+bool
+GenericMidiControlProtocol::active() const
+{
+	return _port && send();
+}
+
diff --git a/libs/ardour/globals.cc b/libs/ardour/globals.cc
index 5cfe83e944..7210fcf9f5 100644
--- a/libs/ardour/globals.cc
+++ b/libs/ardour/globals.cc
@@ -336,7 +336,7 @@ find_file (string name, string dir, string subdir = "")
 	string path;
 	char* envvar = getenv("ARDOUR_PATH");
 
-	/* stop A: any directory in ARDOUR_PATH */
+	/* 1st attempt: any directory in ARDOUR_PATH */
 	
 	if (envvar != 0) {
 
@@ -354,7 +354,7 @@ find_file (string name, string dir, string subdir = "")
 		}
 	}
 
-	/* stop B: ~/.ardour/ */
+	/* 2nd attempt: ~/.ardour/ */
 
 	path = get_user_ardour_path();
 		
@@ -367,7 +367,7 @@ find_file (string name, string dir, string subdir = "")
 		return path;
 	}
 
-	/* C: dir/... */
+	/* 3rd attempt: dir/... */
 	
 	path = dir;
 	path += "/ardour2/";
diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 5e9a196c9a..22686c6cbe 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -767,7 +767,7 @@ Session::when_engine_running ()
 
 	insert_cnt = 0;
 	
-	for (slist<PortInsert*>::iterator i = _port_inserts.begin(); i != _port_inserts.end(); ++i) {
+	for (list<PortInsert*>::iterator i = _port_inserts.begin(); i != _port_inserts.end(); ++i) {
 		uint32_t id;
 
 		if (sscanf ((*i)->name().c_str(), "%*s %u", &id) == 1) {
@@ -779,7 +779,7 @@ Session::when_engine_running ()
 
 	send_cnt = 0;
 
-	for (slist<Send*>::iterator i = _sends.begin(); i != _sends.end(); ++i) {
+	for (list<Send*>::iterator i = _sends.begin(); i != _sends.end(); ++i) {
 		uint32_t id;
 		
 		if (sscanf ((*i)->name().c_str(), "%*s %u", &id) == 1) {
@@ -2211,6 +2211,20 @@ Session::route_by_name (string name)
 	return 0;
 }
 
+Route *
+Session::route_by_remote_id (uint32_t id)
+{
+	RWLockMonitor lm (route_lock, false, __LINE__, __FILE__);
+
+	for (RouteList::iterator i = routes.begin(); i != routes.end(); ++i) {
+		if ((*i)->remote_control_id() == id) {
+			return* i;
+		}
+	}
+
+	return 0;
+}
+
 void
 Session::find_current_end ()
 {
diff --git a/libs/ardour/session_control.cc b/libs/ardour/session_control.cc
new file mode 100644
index 0000000000..8e0a3e99a1
--- /dev/null
+++ b/libs/ardour/session_control.cc
@@ -0,0 +1,30 @@
+
+#include <ardour/session.h>
+#include <ardour/control_protocol.h>
+#include <ardour/generic_midi_control_protocol.h>
+#include <ardour/tranzport_control_protocol.h>
+
+using namespace ARDOUR;
+
+void
+Session::initialize_control ()
+{
+	GenericMidiControlProtocol* midi_protocol = new GenericMidiControlProtocol (*this);
+
+	if (midi_protocol->init() == 0) {
+		control_protocols.push_back (midi_protocol);
+	}
+
+	if (Config->get_use_tranzport()) {
+		cerr << "Creating new tranzport control" << endl;
+
+		TranzportControlProtocol* tranzport_protocol = new TranzportControlProtocol (*this);
+
+		cerr << "Initializing new tranzport control" << endl;
+
+		if (tranzport_protocol->init() == 0) {
+			control_protocols.push_back (tranzport_protocol);
+		}
+	}
+}
+
diff --git a/libs/ardour/session_feedback.cc b/libs/ardour/session_feedback.cc
index 840cb6a97d..09e9021461 100644
--- a/libs/ardour/session_feedback.cc
+++ b/libs/ardour/session_feedback.cc
@@ -37,6 +37,7 @@
 #include <ardour/session.h>
 #include <ardour/audio_track.h>
 #include <ardour/diskstream.h>
+#include <ardour/control_protocol.h>
 
 #include "i18n.h"
 
@@ -65,11 +66,6 @@ Session::init_feedback ()
 	}
 
 	active_feedback = 0;
-	midi_feedback = false;
-
-	/* add possible feedback functions here */
-	
-	feedback_functions.push_back (mem_fun (*this, &Session::feedback_generic_midi_function));
 
 	if (pthread_create_and_store ("feedback", &feedback_thread, 0, _feedback_thread_work, this)) {
 		error << _("Session: could not create feedback thread") << endmsg;
@@ -99,6 +95,28 @@ Session::stop_feedback ()
 }
 
 void
+Session::set_feedback (bool yn)
+{
+	set_dirty();
+
+	if (yn) {
+		/* make sure the feedback thread is alive */
+		start_feedback ();
+	} else {
+		/* maybe put the feedback thread to sleep */
+		stop_feedback ();
+	}
+
+	ControlChanged (Feedback); /* EMIT SIGNAL */
+}
+
+bool
+Session::get_feedback() const
+{
+	return active_feedback > 0;
+}
+
+void
 Session::terminate_feedback ()
 {
 	void* status;
@@ -123,8 +141,7 @@ Session::feedback_thread_work ()
 	pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 
 	if (active_feedback) {
-		/* XXX use Config->feedback_interval_usecs()*/;
-		timeout = max (5, (int) Config->get_midi_feedback_interval_ms());
+		timeout = max (5, (int) Config->get_feedback_interval_ms());
 	} else {
 		timeout = -1;
 	}
@@ -162,7 +179,7 @@ Session::feedback_thread_work ()
 					switch ((FeedbackRequest::Type) req) {
 					
 					case FeedbackRequest::Start:
-						timeout = max (5, (int) Config->get_midi_feedback_interval_ms());
+						timeout = max (5, (int) Config->get_feedback_interval_ms());
 						active_feedback++;
 						break;
 						
@@ -197,50 +214,29 @@ Session::feedback_thread_work ()
 			continue;
 		}
 
-		for (list<FeedbackFunctionPtr>::iterator i = feedback_functions.begin(); i != feedback_functions.end(); ) {
-			
-			list<FeedbackFunctionPtr>::iterator tmp;
-			
-			tmp = i;
-			++tmp;
-			
-			if ((*i) ()) {
-				feedback_functions.erase (i);
+		bool send = false;
+
+		for (vector<ControlProtocol*>::iterator i = control_protocols.begin(); i != control_protocols.end(); ++i) {
+			if ((*i)->send()) {
+				send = true;
+				break;
 			}
-			
-			i = tmp;
 		}
-	}
-	
-	return 0;
-}
+		
+		if (send) {
 
-int
-Session::feedback_generic_midi_function ()
-{
-	const int32_t bufsize = 16 * 1024;
-	int32_t bsize = bufsize;
-	MIDI::byte* buf = new MIDI::byte[bufsize];
-	MIDI::byte* end = buf;
+			RouteList routes = get_routes(); /* copies the routes */
 
-	{
-		RWLockMonitor lm (route_lock, false, __LINE__, __FILE__);
-		
-		for (RouteList::iterator i = routes.begin(); i != routes.end(); ++i) {
-			end = (*i)->write_midi_feedback (end, bsize);
+			for (vector<ControlProtocol*>::iterator i = control_protocols.begin(); i != control_protocols.end(); ++i) {
+				if ((*i)->send_route_feedback ()) {
+					(*i)->send_route_feedback (routes);
+				}
+				(*i)->send_global_feedback ();
+			} 
 		}
 	}
-
-	if (end == buf) {
-		delete [] buf;
-		return 0;
-	} 
 	
-	deliver_midi (_midi_port, buf, (int32_t) (end - buf));
-
-	//cerr << "MIDI feedback: wrote " << (int32_t) (end - buf) << " to midi port\n";
-		
-
 	return 0;
 }
+
 	
diff --git a/libs/ardour/session_midi.cc b/libs/ardour/session_midi.cc
index 1ac7d9e300..af08d3cc3e 100644
--- a/libs/ardour/session_midi.cc
+++ b/libs/ardour/session_midi.cc
@@ -40,6 +40,7 @@
 #include <ardour/diskstream.h>
 #include <ardour/slave.h>
 #include <ardour/cycles.h>
+#include <ardour/generic_midi_control_protocol.h>
 
 #include "i18n.h"
 
@@ -166,6 +167,24 @@ Session::set_send_mmc (bool yn)
 	ControlChanged (SendMMC); /* EMIT SIGNAL */
 }
 
+void
+Session::set_midi_feedback (bool yn)
+{
+	if (generic_midi_control_protocol) {
+		if (yn) {
+			generic_midi_control_protocol->set_send (ControlProtocol::SendRoute);
+		} else {
+			generic_midi_control_protocol->set_send (ControlProtocol::SendWhat (0));
+		}
+	}
+}
+
+bool
+Session::get_midi_feedback () const
+{
+	return generic_midi_control_protocol && generic_midi_control_protocol->active();
+}
+
 bool
 Session::get_send_mtc () const
 {
@@ -308,6 +327,10 @@ Session::set_midi_port (string port_tag)
 	}
 
 	_midi_port = port;
+	
+	if (generic_midi_control_protocol) {
+		generic_midi_control_protocol->set_port (port);
+	}
 
 	Config->set_midi_port_name (port_tag);
 
@@ -449,42 +472,6 @@ Session::get_trace_midi_output(MIDI::Port *port)
 
 }
 
-
-void
-Session::set_midi_feedback (bool yn)
-{
-	if (_midi_port == 0) {
-		return;
-	}
-	
-	midi_feedback = yn;
-	set_dirty();
-
-	if (yn) {
-		/* make sure the feedback thread is alive */
-		start_feedback ();
-	} else {
-		/* maybe put the feedback thread to sleep */
-		stop_feedback ();
-	}
-
-	ControlChanged (MidiFeedback); /* EMIT SIGNAL */
-
-	send_all_midi_feedback ();
-}
-
-void
-Session::send_all_midi_feedback ()
-{
-	if (midi_feedback) {
-		// send out current state of all routes
-		RWLockMonitor lm (route_lock, false, __LINE__, __FILE__);
-		for (RouteList::iterator i = routes.begin(); i != routes.end(); ++i) {
-			(*i)->send_all_midi_feedback ();
-		}
-	}
-}
-
 void
 Session::setup_midi_control ()
 {
@@ -1483,14 +1470,7 @@ Session::get_mmc_control () const
 {
 	return mmc_control;
 }
-bool
-Session::get_midi_feedback () const
-{
-	/* since this a "write" function we have to check the port as well 
-	   as the control toggle.
-	*/
-	return _midi_port && midi_feedback;
-}
+
 bool
 Session::get_midi_control () const
 {
diff --git a/libs/ardour/session_state.cc b/libs/ardour/session_state.cc
index 5301019fa0..5decba1d09 100644
--- a/libs/ardour/session_state.cc
+++ b/libs/ardour/session_state.cc
@@ -165,6 +165,7 @@ Session::first_stage_init (string fullpath, string snapshot_name)
 	butler_mixdown_buffer = 0;
 	butler_gain_buffer = 0;
 	auditioner = 0;
+	generic_midi_control_protocol = 0;
 	mmc_control = false;
 	midi_feedback = false;
 	midi_control = true;
@@ -301,6 +302,8 @@ Session::second_stage_init (bool new_session)
 		return -1;
 	}
 
+	initialize_control();
+	
 	if (init_feedback ()) {
 		return -1;
 	}
@@ -344,7 +347,8 @@ Session::second_stage_init (bool new_session)
 	_engine.transport_locate (0);
 	deliver_mmc (MIDI::MachineControl::cmdMmcReset, 0);
 	deliver_mmc (MIDI::MachineControl::cmdLocate, 0);
-	send_all_midi_feedback();
+
+	// XXX need to poke the feedback thread to send full state
 
 	if (new_session) {
 		_end_location_is_free = true;
diff --git a/libs/ardour/tranzport_control_protocol.cc b/libs/ardour/tranzport_control_protocol.cc
new file mode 100644
index 0000000000..9640ea4a75
--- /dev/null
+++ b/libs/ardour/tranzport_control_protocol.cc
@@ -0,0 +1,718 @@
+#include <iostream>
+
+#include <pbd/pthread_utils.h>
+
+#include <ardour/tranzport_control_protocol.h>
+#include <ardour/route.h>
+#include <ardour/session.h>
+
+using namespace ARDOUR;
+using namespace std;
+
+#include "i18n.h"
+
+TranzportControlProtocol::TranzportControlProtocol (Session& s)
+	: ControlProtocol  (s, _("Tranzport"))
+{
+	timeout = 60000;
+	buttonmask = 0;
+	_datawheel = 0;
+	_device_status = STATUS_OFFLINE;
+	udev = 0;
+	current_route = 0;
+	current_track_id = 0;
+	last_where = max_frames;
+}
+
+TranzportControlProtocol::~TranzportControlProtocol ()
+{
+	if (udev) {
+		pthread_cancel_one (thread);
+		close ();
+	}
+}
+
+int
+TranzportControlProtocol::init ()
+{
+	if (open ()) {
+		return -1;
+	}
+
+	pthread_create_and_store (X_("Tranzport"), &thread, 0, _thread_work, this);
+
+	return 0;
+}
+
+bool
+TranzportControlProtocol::active() const
+{
+	return true;
+}
+		
+void
+TranzportControlProtocol::send_route_feedback (list<Route*>& routes)
+{
+}
+
+void
+TranzportControlProtocol::send_global_feedback ()
+{
+	jack_nframes_t where = session.transport_frame();
+
+	if (where != last_where) {
+
+		char clock_label[16];
+		SMPTE_Time smpte;
+		char* ptr = clock_label;
+
+		session.smpte_time (where, smpte);
+		memset (clock_label, ' ', sizeof (clock_label));
+		
+		if (smpte.negative) {
+			sprintf (ptr, "-%02ld:", smpte.hours);
+		} else {
+			sprintf (ptr, " %02ld:", smpte.hours);
+		}
+		ptr += 4;
+
+		sprintf (ptr, "%02ld:", smpte.minutes);
+		ptr += 3;
+
+		sprintf (ptr, "%02ld:", smpte.seconds);
+		ptr += 3;
+
+		sprintf (ptr, "%02ld", smpte.frames);
+		ptr += 2;
+		
+		lcd_write (7, &clock_label[0]);
+		lcd_write (8, &clock_label[4]);
+		lcd_write (9, &clock_label[8]);
+
+		last_where = where;
+	}
+}
+
+void*
+TranzportControlProtocol::_thread_work (void* arg)
+{
+	return static_cast<TranzportControlProtocol*>(arg)->thread_work ();
+}
+
+void*
+TranzportControlProtocol::thread_work ()
+{
+	cerr << "tranzport thread here, sending message to LCD\n";
+
+	while (true) {
+		if (read()) {
+			return 0;
+		}
+		switch (_device_status) {
+		case STATUS_OFFLINE:
+			cerr << "offline\n";
+			break;
+		case STATUS_ONLINE:
+			cerr << "online\n";
+			break;
+		default:
+			cerr << "unknown status\n";
+			break;
+		}
+
+		if (_device_status == STATUS_ONLINE) {
+			break;
+		}
+	}
+
+	lcd_write (0, "    ");
+	lcd_write (1, "WELC");
+	lcd_write (2, "OME ");
+	lcd_write (3, "TO  ");
+	lcd_write (4, "    ");
+	lcd_write (5, "    ");
+	lcd_write (6, "    ");
+	lcd_write (7, "ARDO");
+	lcd_write (8, "UR  ");
+	lcd_write (9, "    ");
+
+	while (true) {
+		if (read ()) {
+			cerr << "Tranzport command received\n";
+			break;
+		}
+	}
+
+	return 0;
+}
+
+int
+TranzportControlProtocol::open ()
+{
+	struct usb_bus *bus;
+	struct usb_device *dev;
+
+	usb_init();
+	usb_find_busses();
+	usb_find_devices();
+
+	cerr << "checking busses\n";
+	
+	for (bus = usb_busses; bus; bus = bus->next) {
+
+		cerr << "checking devices\n";
+
+		for(dev = bus->devices; dev; dev = dev->next) {
+			cerr << "Checking " << dev->descriptor.idVendor << '/' << dev->descriptor.idProduct << endl;
+			if (dev->descriptor.idVendor != VENDORID)
+				continue;
+			if (dev->descriptor.idProduct != PRODUCTID)
+				continue;
+			cerr << "Open this one" << endl;
+			return open_core (dev);
+		}
+	}
+
+	error << _("Tranzport: no device detected") << endmsg;
+	return -1;
+}
+
+int
+TranzportControlProtocol::open_core (struct usb_device* dev)
+{
+	if (!(udev = usb_open (dev))) {
+		error << _("Tranzport: cannot open USB transport") << endmsg;
+		return -1;
+	}
+	 
+	if (usb_claim_interface (udev, 0) < 0) {
+		error << _("Tranzport: cannot claim USB interface") << endmsg;
+		usb_close (udev);
+		udev = 0;
+		return -1;
+	}
+
+	return 0;
+}
+
+int
+TranzportControlProtocol::close ()
+{
+	int ret = 0;
+
+	if (udev == 0) {
+		return 0;
+	}
+
+	if (usb_release_interface (udev, 0) < 0) {
+		error << _("Tranzport: cannot release interface") << endmsg;
+		ret = -1;
+	}
+
+	if (usb_close (udev)) {
+		error << _("Tranzport: cannot close device") << endmsg;
+		ret = 0;
+	}
+
+	return ret;
+}
+	
+int
+TranzportControlProtocol::write (uint8_t* cmd)
+{
+	int val;
+	val = usb_interrupt_write (udev, WRITE_ENDPOINT, (char*) cmd, 8, timeout);
+	if (val < 0)
+		return val;
+	if (val != 8)
+		return -1;
+	return 0;
+
+}	
+
+void
+TranzportControlProtocol::lcd_clear ()
+{
+	lcd_write (0, "    ");
+	lcd_write (1, "    ");
+	lcd_write (2, "    ");
+	lcd_write (3, "    ");
+	lcd_write (4, "    ");
+	lcd_write (5, "    ");
+	lcd_write (6, "    ");
+	lcd_write (7, "    ");
+	lcd_write (8, "    ");
+	lcd_write (9, "    ");
+}
+
+int
+TranzportControlProtocol::lcd_write (uint8_t cell, const char* text)       
+{
+	uint8_t cmd[8];
+	
+	if (cell > 9) {
+		return -1;
+	}
+
+	cmd[0] = 0x00;
+	cmd[1] = 0x01;
+	cmd[2] = cell;
+	cmd[3] = text[0];
+	cmd[4] = text[1];
+	cmd[5] = text[2];
+	cmd[6] = text[3];
+	cmd[7] = 0x00;
+
+	return write (cmd);
+}
+
+int
+TranzportControlProtocol::light_on (LightID light)
+{
+	uint8_t cmd[8];
+
+	cmd[0] = 0x00;
+	cmd[1] = 0x00;
+	cmd[2] = light;
+	cmd[3] = 0x01;
+	cmd[4] = 0x00;
+	cmd[5] = 0x00;
+	cmd[6] = 0x00;
+	cmd[7] = 0x00;
+
+	return write (cmd);
+}
+
+int
+TranzportControlProtocol::light_off (LightID light)
+{
+	uint8_t cmd[8];
+
+	cmd[0] = 0x00;
+	cmd[1] = 0x00;
+	cmd[2] = light;
+	cmd[3] = 0x00;
+	cmd[4] = 0x00;
+	cmd[5] = 0x00;
+	cmd[6] = 0x00;
+	cmd[7] = 0x00;
+
+	return write (cmd);
+}
+
+int
+TranzportControlProtocol::read ()
+{
+	uint8_t buf[8];
+	int val;
+
+	memset(buf, 0, 8);
+	val = usb_interrupt_read(udev, READ_ENDPOINT, (char*) buf, 8, timeout);
+	if (val < 0) {
+		cerr << "Tranzport read error, val = " << val << endl;
+		return val;
+	}
+	if (val != 8) {
+		cerr << "Tranzport short read, val = " << val << endl;
+		return -1;
+	}
+
+	/*printf("read: %02x %02x %02x %02x %02x %02x %02x %02x\n", buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);*/
+
+	uint32_t this_button_mask;
+	uint32_t button_changes;
+
+	_device_status = buf[1];
+	this_button_mask = 0;
+	this_button_mask |= buf[2] << 24;
+	this_button_mask |= buf[3] << 16;
+	this_button_mask |= buf[4] << 8;
+	this_button_mask |= buf[5];
+	_datawheel = buf[6];
+
+	button_changes = (this_button_mask ^ buttonmask);
+	buttonmask = this_button_mask;
+
+	if (button_changes & ButtonBattery) {
+		if (buttonmask & ButtonBattery) {
+			button_event_battery_press (buttonmask&ButtonShift);
+		} else {
+			button_event_battery_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonBacklight) {
+		if (buttonmask & ButtonBacklight) {
+			button_event_backlight_press (buttonmask&ButtonShift);
+		} else {
+			button_event_backlight_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonTrackLeft) {
+		if (buttonmask & ButtonTrackLeft) {
+			button_event_trackleft_press (buttonmask&ButtonShift);
+		} else {
+			button_event_trackleft_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonTrackRight) {
+		if (buttonmask & ButtonTrackRight) {
+			button_event_trackright_press (buttonmask&ButtonShift);
+		} else {
+			button_event_trackright_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonTrackRec) {
+		if (buttonmask & ButtonTrackRec) {
+			button_event_trackrec_press (buttonmask&ButtonShift);
+		} else {
+			button_event_trackrec_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonTrackMute) {
+		if (buttonmask & ButtonTrackMute) {
+			button_event_trackmute_press (buttonmask&ButtonShift);
+		} else {
+			button_event_trackmute_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonTrackSolo) {
+		if (buttonmask & ButtonTrackSolo) {
+			button_event_tracksolo_press (buttonmask&ButtonShift);
+		} else {
+			button_event_tracksolo_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonUndo) {
+		if (buttonmask & ButtonUndo) {
+			button_event_undo_press (buttonmask&ButtonShift);
+		} else {
+			button_event_undo_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonIn) {
+		if (buttonmask & ButtonIn) {
+			button_event_in_press (buttonmask&ButtonShift);
+		} else {
+			button_event_in_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonOut) {
+		if (buttonmask & ButtonOut) {
+			button_event_out_press (buttonmask&ButtonShift);
+		} else {
+			button_event_out_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonPunch) {
+		if (buttonmask & ButtonPunch) {
+			button_event_punch_press (buttonmask&ButtonShift);
+		} else {
+			button_event_punch_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonLoop) {
+		if (buttonmask & ButtonLoop) {
+			button_event_loop_press (buttonmask&ButtonShift);
+		} else {
+			button_event_loop_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonPrev) {
+		if (buttonmask & ButtonPrev) {
+			button_event_prev_press (buttonmask&ButtonShift);
+		} else {
+			button_event_prev_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonAdd) {
+		if (buttonmask & ButtonAdd) {
+			button_event_add_press (buttonmask&ButtonShift);
+		} else {
+			button_event_add_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonNext) {
+		if (buttonmask & ButtonNext) {
+			button_event_next_press (buttonmask&ButtonShift);
+		} else {
+			button_event_next_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonRewind) {
+		if (buttonmask & ButtonRewind) {
+			button_event_rewind_press (buttonmask&ButtonShift);
+		} else {
+			button_event_rewind_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonFastForward) {
+		if (buttonmask & ButtonFastForward) {
+			button_event_fastforward_press (buttonmask&ButtonShift);
+		} else {
+			button_event_fastforward_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonStop) {
+		if (buttonmask & ButtonStop) {
+			button_event_stop_press (buttonmask&ButtonShift);
+		} else {
+			button_event_stop_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonPlay) {
+		if (buttonmask & ButtonPlay) {
+			button_event_play_press (buttonmask&ButtonShift);
+		} else {
+			button_event_play_release (buttonmask&ButtonShift);
+		}
+	}
+	if (button_changes & ButtonRecord) {
+		if (buttonmask & ButtonRecord) {
+			button_event_record_press (buttonmask&ButtonShift);
+		} else {
+			button_event_record_release (buttonmask&ButtonShift);
+		}
+	}
+		
+	return 0;
+}
+
+void
+TranzportControlProtocol::show_current_track ()
+{
+	current_route = session.route_by_remote_id (current_track_id);
+	
+	if (current_route == 0) {
+		char buf[5];
+		lcd_clear ();
+		lcd_write (0, "NO T");
+		lcd_write (1, "RACK");
+		lcd_write (2, " ID ");
+		snprintf (buf, sizeof (buf), "%4d", current_track_id);
+		lcd_write (3, buf);
+		return;
+	}
+
+	string name = current_route->name();
+
+	lcd_write (0, name.substr (0, 4).c_str());
+	lcd_write (1, name.substr (4, 4).c_str());
+}
+	
+void
+TranzportControlProtocol::button_event_battery_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_battery_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_backlight_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_backlight_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_trackleft_press (bool shifted)
+{
+	if (current_track_id == 0) {
+		current_track_id = session.nroutes() - 1;
+	} else {
+		current_track_id--;
+	}
+	
+	show_current_track ();
+}
+
+void
+TranzportControlProtocol::button_event_trackleft_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_trackright_press (bool shifted)
+{
+	if (current_track_id == session.nroutes()) {
+		current_track_id = 0;
+	} else {
+		current_track_id++;
+	}
+	
+	show_current_track ();
+}
+
+void
+TranzportControlProtocol::button_event_trackright_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_trackrec_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_trackrec_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_trackmute_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_trackmute_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_tracksolo_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_tracksolo_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_undo_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_undo_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_in_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_in_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_out_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_out_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_punch_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_punch_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_loop_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_loop_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_prev_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_prev_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_add_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_add_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_next_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_next_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_rewind_press (bool shifted)
+{
+	session.request_transport_speed (-2.0f);
+}
+
+void
+TranzportControlProtocol::button_event_rewind_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_fastforward_press (bool shifted)
+{
+	session.request_transport_speed (2.0f);
+}
+
+void
+TranzportControlProtocol::button_event_fastforward_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_stop_press (bool shifted)
+{
+	session.request_transport_speed (0.0);
+}
+
+void
+TranzportControlProtocol::button_event_stop_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_play_press (bool shifted)
+{
+	session.request_transport_speed (1.0);
+}
+
+void
+TranzportControlProtocol::button_event_play_release (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_record_press (bool shifted)
+{
+}
+
+void
+TranzportControlProtocol::button_event_record_release (bool shifted)
+{
+}