automation_watch.h

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/*
 * Copyright (C) 2012-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2017-2019 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.
 */
 
#pragma once
 
#include <memory>
#include <set>
 
#include <sigc++/signal.h>
 
#include "pbd/pthread_utils.h"
#include "pbd/signals.h"
 
#include "ardour/session_handle.h"
#include "ardour/types.h"
 
namespace ARDOUR {
 
class AutomationControl;
 
class LIBARDOUR_API AutomationWatch : public sigc::trackable, public ARDOUR::SessionHandlePtr
{
public:
        static AutomationWatch& instance();
 
        void add_automation_watch (std::shared_ptr<ARDOUR::AutomationControl>);
        void remove_automation_watch (std::shared_ptr<ARDOUR::AutomationControl>);
        void transport_stop_automation_watches (ARDOUR::samplepos_t);
        void set_session (ARDOUR::Session*);
 
        gint timer ();
 
private:
        typedef std::set<std::shared_ptr<ARDOUR::AutomationControl> > AutomationWatches;
        typedef std::map<std::shared_ptr<ARDOUR::AutomationControl>, PBD::ScopedConnection> AutomationConnection;
 
        AutomationWatch ();
        ~AutomationWatch();
 
        static AutomationWatch* _instance;
        PBD::Thread*            _thread;
        samplepos_t             _last_time;
        bool                    _run_thread;
        AutomationWatches        automation_watches;
        AutomationConnection     automation_connections;
        Glib::Threads::Mutex     automation_watch_lock;
        PBD::ScopedConnection    transport_connection;
 
        void transport_state_change ();
        void remove_weak_automation_watch (std::weak_ptr<ARDOUR::AutomationControl>);
        void thread ();
};
 
} /* namespace */