Support thread-safe LV2 state restoration

[ardour.git] / libs / ardour / ardour / control_protocol_manager.h

diff --git a/libs/ardour/ardour/control_protocol_manager.h b/libs/ardour/ardour/control_protocol_manager.h
index f0b7846978a96b649b2014dfd8281bb6aa47c5e9..c6ea045ce10d090a6218ac549668552cc06fc4ed 100644 (file)
--- a/libs/ardour/ardour/control_protocol_manager.h
+++ b/libs/ardour/ardour/control_protocol_manager.h
@@ -1,46 +1,99 @@
+/*
+    Copyright (C) 2000-2007 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.
+
+*/
+
 #ifndef ardour_control_protocol_manager_h
 #define ardour_control_protocol_manager_h
 
 #include <string>
 #include <list>
 
-#include <pbd/lockmonitor.h>
+
+#include <glibmm/threads.h>
+
+#include "pbd/stateful.h"
+#include "ardour/session_handle.h"
 
 namespace ARDOUR {
 
 class ControlProtocol;
 class ControlProtocolDescriptor;
+class Session;
+
+class LIBARDOUR_API ControlProtocolInfo {
+       public:
+               ControlProtocolDescriptor* descriptor;
+               ControlProtocol* protocol;
+               std::string name;
+               std::string path;
+               bool requested;
+               bool mandatory;
+               bool supports_feedback;
+               XMLNode* state;
+
+               ControlProtocolInfo() : descriptor (0), protocol (0), requested(false),
+               mandatory(false), supports_feedback(false), state (0)
+       {}
+               ~ControlProtocolInfo();
 
-struct ControlProtocolInfo {
-    ControlProtocolDescriptor* descriptor;
-    ControlProtocol* protocol;
-    std::string name;
-    std::string path;
 };
 
-class ControlProtocolManager
+class LIBARDOUR_API ControlProtocolManager : public PBD::Stateful, public ARDOUR::SessionHandlePtr
 {
   public:
-       ControlProtocolManager ();
        ~ControlProtocolManager ();
 
-       static ControlProtocolManager& instance() { return *_instance; }
+       static ControlProtocolManager& instance();
+
+       void set_session (Session*);
+       void discover_control_protocols ();
+       void foreach_known_protocol (boost::function<void(const ControlProtocolInfo*)>);
+       void load_mandatory_protocols ();
+       void midi_connectivity_established ();
+       void drop_protocols ();
+       void register_request_buffer_factories ();
+
+       int activate (ControlProtocolInfo&);
+        int deactivate (ControlProtocolInfo&);
+
+       std::list<ControlProtocolInfo*> control_protocol_info;
 
-       void discover_control_protocols (std::string search_path);
-       void startup (Session&);
+       static const std::string state_node_name;
 
-       ControlProtocol* instantiate (Session&, std::string protocol_name);
-       int              teardown (std::string protocol_name);
+       int set_state (const XMLNode&, int version);
+       XMLNode& get_state (void);
+
+        PBD::Signal1<void,ControlProtocolInfo*> ProtocolStatusChange;
 
   private:
+       ControlProtocolManager ();
        static ControlProtocolManager* _instance;
 
-       PBD::Lock protocols_lock;
-       std::list<ControlProtocolInfo*> control_protocol_info;
+       Glib::Threads::Mutex protocols_lock;
        std::list<ControlProtocol*>    control_protocols;
 
+       void session_going_away ();
+
        int control_protocol_discover (std::string path);
        ControlProtocolDescriptor* get_descriptor (std::string path);
+       ControlProtocolInfo* cpi_by_name (std::string);
+       ControlProtocol* instantiate (ControlProtocolInfo&);
+       int teardown (ControlProtocolInfo&);
 };
 
 } // namespace