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/*
Copyright (C) 2000 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_graphnode_h__
#define __ardour_graphnode_h__
#include <list>
#include <set>
#include <vector>
#include <boost/shared_ptr.hpp>
namespace ARDOUR
{
class Graph;
class GraphNode;
typedef boost::shared_ptr<GraphNode> node_ptr_t;
typedef std::set<node_ptr_t> node_set_t;
typedef std::list<node_ptr_t> node_list_t;
class LIBARDOUR_API GraphActivision
{
protected:
friend class Graph;
/** Nodes that we directly feed */
node_set_t _activation_set[2];
/** The number of nodes that we directly feed us (one count for each chain) */
gint _init_refcount[2];
};
/** A node on our processing graph, ie a Route */
class LIBARDOUR_API GraphNode : public GraphActivision
{
public:
GraphNode (boost::shared_ptr<Graph> Graph);
virtual ~GraphNode ();
void prep (int chain);
void trigger ();
void
run (int chain)
{
process ();
finish (chain);
}
private:
void finish (int chain);
void process ();
boost::shared_ptr<Graph> _graph;
gint _refcount;
};
}
#endif
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