MCP: metering changes from rodrigo, makes metering work correctly on the MC Pro (also checked on the nucleus)

git-svn-id: svn://localhost/ardour2/branches/3.0@12489 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/surfaces/mackie/mackie_control_protocol.cc

@@ -880,7 +880,11 @@ MackieControlProtocol::notify_transport_state_changed()
 	update_global_button (Button::Stop, !session->transport_rolling());
 	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 ();
+	}
+	
 	_transport_previously_rolling = session->transport_rolling();
 }
 

libs/surfaces/mackie/meter.cc

@@ -22,6 +22,7 @@
 #include "pbd/compose.h"
 #include "ardour/debug.h"
 
+#include "mackie_control_protocol.h"
 #include "meter.h"
 #include "surface.h"
 #include "surface_port.h"
@@ -40,6 +41,57 @@ Meter::factory (Surface& surface, int id, const char* name, Group& group)
 	return m;
 }
 
+void 
+Meter::update_transport_rolling(Surface& surface)
+{
+	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;
+		
+		// sysex header
+		enable_msg << surface.sysex_hdr();
+		
+		// code for Channel Meter Enable Message
+		enable_msg << 0x20;
+		
+		// Channel identification
+		enable_msg << id();
+		
+		// Enabling level meter on LCD, peak hold display on horizontal meter and signal LED
+		enable_msg << 0x07;
+		
+		// sysex trailer
+		enable_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;
+}
+
 void
 Meter::send_update (Surface& surface, float dB)
 {
@@ -47,6 +99,10 @@ 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) {
@@ -89,10 +145,7 @@ Meter::send_update (Surface& surface, float dB)
 
 	int segment = lrintf ((def/115.0) * 13.0);
 	
-	if (last_segment_value_sent != segment) {
-		last_segment_value_sent = segment;
-		surface.write (MidiByteArray (2, 0xD0, (id()<<4) | segment));
-	}
+	surface.write (MidiByteArray (2, 0xd0, (id()<<4) | segment));
 }
 
 MidiByteArray

libs/surfaces/mackie/meter.h

@@ -32,7 +32,6 @@ class Meter : public Control
 public:
 	Meter (int id, std::string name, Group & group)
 		: Control  (id, name, group)
-		, last_segment_value_sent (-1)
 		, overload_on (false) {}
 	
 	void send_update (Surface&, float dB);
@@ -40,11 +39,12 @@ public:
 	MidiByteArray zero();
 
 	static Control* factory (Surface&, int id, const char*, Group&);
-	
-	int last_segment_value_sent;
+  
+	void update_transport_rolling(Surface& surface);
 
   private:
 	bool overload_on;
+	bool _transport_is_rolling;
 };
 
 }

libs/surfaces/mackie/strip.cc

@@ -1066,3 +1066,11 @@ Strip::reset_saved_values ()
 	_last_gain_position_written = -1.0;
 
 }
+
+void 
+Strip::notify_transport_state_changed()
+{
+	if (_meter) {
+		_meter->update_transport_rolling (*_surface);
+	}
+}

libs/surfaces/mackie/strip.h

@@ -83,6 +83,8 @@ public:
 	bool locked() const { return _controls_locked; }
 
 	void gui_selection_changed (const ARDOUR::StrongRouteNotificationList&);
+  
+	void notify_transport_state_changed();
 
 private:
 	Button*  _solo;

libs/surfaces/mackie/surface.cc

@@ -845,3 +845,11 @@ Surface::route_is_locked_to_strip (boost::shared_ptr<Route> r) const
 	}
 	return false;
 }
+
+void 
+Surface::notify_transport_state_changed()
+{
+	for (Strips::const_iterator s = strips.begin(); s != strips.end(); ++s) {
+		(*s)->notify_transport_state_changed ();
+	}
+}

libs/surfaces/mackie/surface.h

@@ -145,6 +145,8 @@ public:
 
 	void next_jog_mode ();
 	void set_jog_mode (Mackie::JogWheel::Mode);
+  
+  void notify_transport_state_changed();
 
   protected: