MCP: breakout Led class code; remove builder code for Led changes and put it into Led::set_state() which returns the (possibly empty) MIDI data needed to go back to the MCP device to change the LED visible state

git-svn-id: svn://localhost/ardour2/branches/3.0@11886 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 59 insertions, 0 deletions

diff --git a/libs/surfaces/mackie/led.cc b/libs/surfaces/mackie/led.cc
new file mode 100644
index 0000000000..8dc1d626cc
--- /dev/null
+++ b/libs/surfaces/mackie/led.cc
@@ -0,0 +1,59 @@
+/*
+	Copyright (C) 2006,2007 John Anderson
+	Copyright (C) 2012 Paul Davis
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "led.h"
+#include "surface.h"
+#include "control_group.h"
+
+using namespace Mackie;
+
+Control*
+Led::factory (Surface& surface, int id, const char* name, Group& group)
+{
+	Led* l = new Led (id, name, group);
+	surface.leds[id] = l;
+	surface.controls.push_back (l);
+	group.add (*l);
+	return l;
+}
+
+MidiByteArray 
+Led::set_state (LedState new_state)
+{
+	if (new_state != state) {
+		return MidiByteArray();
+	}
+	
+	state = new_state;
+
+	MIDI::byte msg = 0;
+
+	switch  (state.state()) {
+	case LedState::on:			
+		msg = 0x7f; break;
+	case LedState::off:			
+		msg = 0x00; break;
+	case LedState::flashing:	
+		msg = 0x01; break;
+	case LedState::none:			
+		return MidiByteArray ();
+	}
+	
+	return MidiByteArray  (3, 0x90, raw_id(), msg);
+}