MCP: Patch from Rodrigo that:

* implements Metering on/off through Button::Read as per Seablade's suggestion. I choose this button as it's the "Show meters" button in Traktion;
    * removes redundant code from Meter::update_transport_rolling();
    * renames Meter::update_transport_rolling() to Meter::notify_metering_state_changed();
    * renamed Surface::notify_transport_state_changed() to Surface::notify_metering_state_changed();
    * renamed Strip::notify_transport_state_changed() to Strip::notify_metering_state_changed();
    * created MackieControlProtocol::notify_metering_state_changed() and made MackieControlProtocol::notify_transport_state_changed() use it;
    * implemented turning off of timecode display and two char display in Surface::zero_all ();
    * implemented master fader zeroing in Surface::zero_all ();
    * calling Surfaces->zero_all() at MackieControlProtocol destructor;
    * implemented restore of 2nd LCD line content after metering being active.



git-svn-id: svn://localhost/ardour2/branches/3.0@12520 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/surfaces/mackie/mackie_control_protocol.cc

@@ -107,6 +107,7 @@ MackieControlProtocol::MackieControlProtocol (Session& session)
 	, _modifier_state (0)
 	, _ipmidi_base (MIDI::IPMIDIPort::lowest_ipmidi_port_default)
 	, needs_ipmidi_restart (false)
+	, _metering_active (true)
 {
 	DEBUG_TRACE (DEBUG::MackieControl, "MackieControlProtocol::MackieControlProtocol\n");
 
@@ -124,6 +125,10 @@ MackieControlProtocol::~MackieControlProtocol()
 {
 	DEBUG_TRACE (DEBUG::MackieControl, "MackieControlProtocol::~MackieControlProtocol\n");
 	
+	for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+		(*s)->zero_all ();
+	}
+	
 	drop_connections ();
 	tear_down_gui ();
 
@@ -881,13 +886,19 @@ MackieControlProtocol::notify_transport_state_changed()
 	update_global_button (Button::Rewind, session->transport_speed() < 0.0);
 	update_global_button (Button::Ffwd, session->transport_speed() > 1.0);
 
-	for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
-		(*s)->notify_transport_state_changed ();
-	}
+	notify_metering_state_changed ();
 	
 	_transport_previously_rolling = session->transport_rolling();
 }
 
+void 
+MackieControlProtocol::notify_metering_state_changed()
+{
+	for (Surfaces::iterator s = surfaces.begin(); s != surfaces.end(); ++s) {
+		(*s)->notify_metering_state_changed ();
+	}	
+}
+
 void
 MackieControlProtocol::notify_record_state_changed ()
 {

libs/surfaces/mackie/mackie_control_protocol.h

@@ -128,6 +128,7 @@ class MackieControlProtocol
 	bool     flip_mode () const { return _flip_mode; }
 	ViewMode view_mode () const { return _view_mode; }
 	bool zoom_mode () const { return _zoom_mode; }
+	bool     metering_active () const { return _metering_active; }
 
 	void set_view_mode (ViewMode);
 	void set_flip_mode (bool);
@@ -164,6 +165,7 @@ class MackieControlProtocol
 	void notify_record_state_changed();
 	void notify_transport_state_changed();
 	void notify_loop_state_changed();
+	void notify_metering_state_changed();
 	// mainly to pick up punch-in and punch-out
 	void notify_parameter_changed(std::string const &);
 	void notify_solo_active_changed(bool);
@@ -286,6 +288,7 @@ class MackieControlProtocol
 	ButtonMap                 button_map;
 	int16_t                  _ipmidi_base;
 	bool                      needs_ipmidi_restart;
+	bool                     _metering_active;
 
 	ARDOUR::RouteNotificationList _last_selected_routes;
 

libs/surfaces/mackie/mcp_buttons.cc

@@ -1009,12 +1009,14 @@ MackieControlProtocol::snapshot_release (Mackie::Button&)
 Mackie::LedState 
 MackieControlProtocol::read_press (Mackie::Button&) 
 {
-	return none;
+	_metering_active = !_metering_active;
+	notify_metering_state_changed ();
+	return _metering_active;
 }
 Mackie::LedState 
 MackieControlProtocol::read_release (Mackie::Button&) 
 {
-	return none;
+	return _metering_active;
 }
 Mackie::LedState 
 MackieControlProtocol::write_press (Mackie::Button&) 

libs/surfaces/mackie/meter.cc

@@ -22,7 +22,6 @@
 #include "pbd/compose.h"
 #include "ardour/debug.h"
 
-#include "mackie_control_protocol.h"
 #include "meter.h"
 #include "surface.h"
 #include "surface_port.h"
@@ -42,54 +41,26 @@ Meter::factory (Surface& surface, int id, const char* name, Group& group)
 }
 
 void 
-Meter::update_transport_rolling(Surface& surface)
+Meter::notify_metering_state_changed(Surface& surface, bool transport_is_rolling, bool metering_active)
 {	
-	bool transport_is_rolling = (surface.mcp().get_transport_speed () != 0.0f);
-	
-	if (_transport_is_rolling == transport_is_rolling) {
-		return;
-	}
-	if (transport_is_rolling) {
-		MidiByteArray enable_msg;
+	MidiByteArray msg;
 		
 	// sysex header
-		enable_msg << surface.sysex_hdr();
+	msg << surface.sysex_hdr();
 		
 	// code for Channel Meter Enable Message
-		enable_msg << 0x20;
+	msg << 0x20;
 		
 	// Channel identification
-		enable_msg << id();
+	msg << id();
 		
-		// Enabling level meter on LCD, peak hold display on horizontal meter and signal LED
-		enable_msg << 0x07;
+	// Enable (0x07) / Disable (0x00) level meter on LCD, peak hold display on horizontal meter and signal LED
+	msg << ((transport_is_rolling && metering_active) ? 0x07 : 0x00);
 		
 	// sysex trailer
-		enable_msg << MIDI::eox;
+	msg << MIDI::eox;
 		
-		surface.write (enable_msg);
-		
-	} else {
-		MidiByteArray disable_msg;
-		
-		// sysex header
-		disable_msg << surface.sysex_hdr();
-		
-		// code for Channel Meter Enable Message
-		disable_msg << 0x20;
-		
-		// Channel identification
-		disable_msg << id();
-		
-		// Disabling level meter on LCD, peak hold display on horizontal meter and signal LED
-		disable_msg << 0x00;
-		
-		// sysex trailer
-		disable_msg << MIDI::eox;
-		
-		surface.write (disable_msg);		
-	}
-	_transport_is_rolling = transport_is_rolling;
+	surface.write (msg);
 }
 
 void
@@ -99,10 +70,6 @@ Meter::send_update (Surface& surface, float dB)
 
 	// DEBUG_TRACE (DEBUG::MackieControl, string_compose ("Meter ID %1 dB %2\n", id(), dB));
 	
-	if (!_transport_is_rolling) {
-		return;
-	}
-	
 	if (dB < -70.0f) {
 		def = 0.0f;
 	} else if (dB < -60.0f) {

libs/surfaces/mackie/meter.h

@@ -40,11 +40,10 @@ public:
 
 	static Control* factory (Surface&, int id, const char*, Group&);
   
-	void update_transport_rolling(Surface& surface);
+	void notify_metering_state_changed(Surface& surface, bool transport_is_rolling, bool metering_active);
 
   private:
 	bool overload_on;
-	bool _transport_is_rolling;
 };
 
 }

libs/surfaces/mackie/strip.cc

@@ -73,6 +73,8 @@ Strip::Strip (Surface& s, const std::string& name, int index, const map<Button::
 	, _index (index)
 	, _surface (&s)
 	, _controls_locked (false)
+	, _transport_is_rolling (false)
+	, _metering_active (true)
 	, _reset_display_at (0)
 	, _last_gain_position_written (-1.0)
 	, _last_pan_azi_position_written (-1.0)
@@ -690,7 +692,7 @@ Strip::update_automation ()
 void
 Strip::update_meter ()
 {
-	if (_meter) {
+	if (_meter && _transport_is_rolling && _metering_active) {
 		float dB = const_cast<PeakMeter&> (_route->peak_meter()).peak_power (0);
 		_meter->send_update (*_surface, dB);
 	}
@@ -1068,9 +1070,26 @@ Strip::reset_saved_values ()
 }
 
 void 
-Strip::notify_transport_state_changed()
+Strip::notify_metering_state_changed()
 {
-	if (_meter) {
-		_meter->update_transport_rolling (*_surface);
+	if (!_route || !_meter) {
+		return;
 	}
+	
+	bool transport_is_rolling = (_surface->mcp().get_transport_speed () != 0.0f);
+	bool metering_active = _surface->mcp().metering_active ();
+	
+	if ((_transport_is_rolling == transport_is_rolling) && (_metering_active == metering_active)) {
+		return;
+	}
+	
+	_meter->notify_metering_state_changed (*_surface, transport_is_rolling, metering_active);
+	
+	if (!transport_is_rolling || !metering_active) {
+		notify_property_changed (PBD::PropertyChange (ARDOUR::Properties::name));
+		notify_panner_azi_changed (true);
+	}
+	
+	_transport_is_rolling = transport_is_rolling;
+	_metering_active = metering_active;
 }

libs/surfaces/mackie/strip.h

@@ -84,7 +84,7 @@ public:
 
 	void gui_selection_changed (const ARDOUR::StrongRouteNotificationList&);
   
-	void notify_transport_state_changed();
+	void notify_metering_state_changed();
 
 private:
 	Button*  _solo;
@@ -99,6 +99,8 @@ private:
 	int      _index;
 	Surface* _surface;
 	bool     _controls_locked;
+	bool     _transport_is_rolling;
+	bool     _metering_active;
 	uint64_t _reset_display_at;
 	boost::shared_ptr<ARDOUR::Route> _route;
 	PBD::ScopedConnectionList route_connections;

libs/surfaces/mackie/surface.cc

@@ -573,7 +573,17 @@ Surface::nth_strip (uint32_t n) const
 void
 Surface::zero_all ()
 {
-	// TODO turn off Timecode displays
+	if (_mcp.device_info().has_timecode_display ()) {
+		display_timecode (string (10, '0'), string (10, ' '));
+	}
+	
+	if (_mcp.device_info().has_two_character_display()) {
+		show_two_char_display (string (2, ' '), string (2, '.'));
+	}
+
+	if (_mcp.device_info().has_master_fader ()) {
+		_port->write (_master_fader->zero ());
+	}
 	
 	// zero all strips
 	for (Strips::iterator it = strips.begin(); it != strips.end(); ++it) {
@@ -601,12 +611,6 @@ Surface::zero_controls ()
 		}
 	}
 
-	if (_number == 0 && _mcp.device_info().has_two_character_display()) {
-		// any hardware-specific stuff
-		// clear 2-char display
-		show_two_char_display (" ");
-	}
-
 	// and the led ring for the master strip
 	blank_jog_ring ();
 }
@@ -847,9 +851,9 @@ Surface::route_is_locked_to_strip (boost::shared_ptr<Route> r) const
 }
 
 void 
-Surface::notify_transport_state_changed()
+Surface::notify_metering_state_changed()
 {
 	for (Strips::const_iterator s = strips.begin(); s != strips.end(); ++s) {
-		(*s)->notify_transport_state_changed ();
+		(*s)->notify_metering_state_changed ();
 	}
 }

libs/surfaces/mackie/surface.h

@@ -146,7 +146,7 @@ public:
 	void next_jog_mode ();
 	void set_jog_mode (Mackie::JogWheel::Mode);
   
-  void notify_transport_state_changed();
+  void notify_metering_state_changed();
 
   protected: