control_protocol_manager.h

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/*
 * Copyright (C) 2006-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2007 Tim Mayberry <mojofunk@gmail.com>
 * Copyright (C) 2009-2012 David Robillard <d@drobilla.net>
 * Copyright (C) 2009 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2015-2016 Robin Gareus <robin@gareus.org>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef ardour_control_protocol_manager_h
#define ardour_control_protocol_manager_h
 
#include <string>
#include <list>
 
 
#include <glibmm/threads.h>
 
#include "pbd/stateful.h"
 
#include "control_protocol/types.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 automatic;
                XMLNode* state;
 
                ControlProtocolInfo()
                        : descriptor (0)
                        , protocol (0)
                        , requested (false)
                        , automatic (false)
                        , state (0)
        {}
                ~ControlProtocolInfo();
 
};
 
class LIBARDOUR_API ControlProtocolManager : public PBD::Stateful, public ARDOUR::SessionHandlePtr
{
  public:
        ~ControlProtocolManager ();
 
        static ControlProtocolManager& instance();
 
        void set_session (Session*);
        void discover_control_protocols ();
        void foreach_known_protocol (std::function<void(const ControlProtocolInfo*)>);
        void midi_connectivity_established (bool);
        void drop_protocols ();
        void probe_midi_control_protocols ();
        void probe_usb_control_protocols (bool, uint16_t, uint16_t);
 
        int activate (ControlProtocolInfo&);
        int deactivate (ControlProtocolInfo&);
 
        std::list<ControlProtocolInfo*> control_protocol_info;
 
        static const std::string state_node_name;
 
        int set_state (const XMLNode&, int version);
        XMLNode& get_state () const;
 
        PBD::Signal<void(ControlProtocolInfo*)> ProtocolStatusChange;
 
        void stripable_selection_changed (ARDOUR::StripableNotificationListPtr);
        static PBD::Signal<void(ARDOUR::StripableNotificationListPtr)> StripableSelectionChanged;
 
  private:
        ControlProtocolManager ();
        static ControlProtocolManager* _instance;
 
        mutable Glib::Threads::RWLock 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&, bool lock_required);
};
 
} // namespace
 
#endif // ardour_control_protocol_manager_h