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/*
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 <sigc++/sigc++.h>
#include <glibmm/thread.h>
#include "pbd/stateful.h"
namespace ARDOUR {
class ControlProtocol;
class ControlProtocolDescriptor;
class Session;
struct ControlProtocolInfo {
ControlProtocolDescriptor* descriptor;
ControlProtocol* protocol;
std::string name;
std::string path;
bool requested;
bool mandatory;
bool supports_feedback;
XMLNode* state;
ControlProtocolInfo() : descriptor (0), protocol (0), state (0) {}
~ControlProtocolInfo() { if (state) { delete state; } }
};
class ControlProtocolManager : public sigc::trackable, public PBD::Stateful
{
public:
~ControlProtocolManager ();
static ControlProtocolManager& instance();
void set_session (Session&);
void discover_control_protocols ();
void foreach_known_protocol (sigc::slot<void,const ControlProtocolInfo*>);
void load_mandatory_protocols ();
ControlProtocol* instantiate (ControlProtocolInfo&);
int teardown (ControlProtocolInfo&);
std::list<ControlProtocolInfo*> control_protocol_info;
static const std::string state_node_name;
void set_protocol_states (const XMLNode&);
int set_state (const XMLNode&, int version = 3000);
XMLNode& get_state (void);
private:
ControlProtocolManager ();
static ControlProtocolManager* _instance;
Session* _session;
Glib::Mutex protocols_lock;
std::list<ControlProtocol*> control_protocols;
void drop_session ();
int control_protocol_discover (std::string path);
ControlProtocolDescriptor* get_descriptor (std::string path);
ControlProtocolInfo* cpi_by_name (std::string);
};
} // namespace
#endif // ardour_control_protocol_manager_h
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