MCP: send nothing if LedState is none in build_led(); return none from all transport button presses

git-svn-id: svn://localhost/ardour2/branches/3.0@11884 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/surfaces/mackie/mackie_midi_builder.cc

@@ -92,12 +92,16 @@ MidiByteArray MackieMidiBuilder::build_led (const Button & button, LedState ls)
 MidiByteArray MackieMidiBuilder::build_led (const Led & led, LedState ls)
 {
 	MIDI::byte state = 0;
-	switch  (ls.state())
-	{
-		case LedState::on:			state = 0x7f; break;
-		case LedState::off:			state = 0x00; break;
-		case LedState::none:			state = 0x00; break; // actually, this should never happen.
-		case LedState::flashing:	state = 0x01; break;
+
+	switch  (ls.state()) {
+		case LedState::on:			
+			state = 0x7f; break;
+		case LedState::off:			
+			state = 0x00; break;
+		case LedState::flashing:	
+			state = 0x01; break;
+		case LedState::none:			
+			return MidiByteArray ();
 	}
 	
 	return MidiByteArray  (3

libs/surfaces/mackie/mcp_buttons.cc

@@ -479,65 +479,65 @@ LedState
 MackieControlProtocol::play_press (Button &)
 {
 	transport_play ();
-	return on;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::play_release (Button &)
 {
-	return session->transport_rolling();
+	return none;
 }
 
 LedState 
 MackieControlProtocol::record_press (Button &)
 {
 	rec_enable_toggle ();
-	return off;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::record_release (Button &)
 {
-	return off;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::rewind_press (Button &)
 {
 	rewind ();
-	return off;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::rewind_release (Button &)
 {
-	return off;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::ffwd_press (Button &)
 {
 	ffwd ();
-	return off;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::ffwd_release (Button &)
 {
-	return off;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::loop_press (Button &)
 {
 	session->request_play_loop (!session->get_play_loop());
-	return off;
+	return none;
 }
 
 LedState 
 MackieControlProtocol::loop_release (Button &)
 {
-	return off;
+	return none;
 }
 
 LedState