From 8338fd8ac618e899756017f700642f78dc8f059b Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Thu, 8 Oct 2015 21:54:40 -0400
Subject: [PATCH] add DeviceChanged signal to MCP and make surface lock mutable
 for use in const methods.

Also add nth_surface() API to MackieControlProtocol
---
 libs/surfaces/mackie/mackie_control_protocol.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/libs/surfaces/mackie/mackie_control_protocol.h b/libs/surfaces/mackie/mackie_control_protocol.h
index 70b8f35ad2..9b85c278b3 100644
--- a/libs/surfaces/mackie/mackie_control_protocol.h
+++ b/libs/surfaces/mackie/mackie_control_protocol.h
@@ -115,7 +115,7 @@ class MackieControlProtocol
 		PlugIn,
 		EQ,
 		Instrument,
- 	};
+	};
 
 	enum FlipMode {
 		Normal, /* fader controls primary, vpot controls secondary */
@@ -132,6 +132,8 @@ class MackieControlProtocol
 	const Mackie::DeviceInfo& device_info() const { return _device_info; }
 	Mackie::DeviceProfile& device_profile() { return _device_profile; }
 
+	PBD::Signal0<void> DeviceChanged;
+
         void device_ready ();
 
 	int set_active (bool yn);
@@ -158,10 +160,12 @@ class MackieControlProtocol
 
 	static bool probe();
 
-        Glib::Threads::Mutex surfaces_lock;
+	mutable Glib::Threads::Mutex surfaces_lock;
 	typedef std::list<boost::shared_ptr<Mackie::Surface> > Surfaces;
 	Surfaces surfaces;
 
+	boost::shared_ptr<Mackie::Surface> nth_surface (uint32_t) const;
+
 	std::list<boost::shared_ptr<ARDOUR::Bundle> > bundles ();
 
 	void set_master_on_surface_strip (uint32_t surface, uint32_t strip);