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+/* This file is part of Ingen.
+ * Copyright 2007-2011 David Robillard <http://drobilla.net>
+ *
+ * Ingen 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.
+ *
+ * Ingen 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef INGEN_ENGINE_GRAPHOBJECTIMPL_HPP
+#define INGEN_ENGINE_GRAPHOBJECTIMPL_HPP
+
+#include <string>
+#include <map>
+#include <cstddef>
+#include <cassert>
+#include "raul/Deletable.hpp"
+#include "raul/Path.hpp"
+#include "raul/SharedPtr.hpp"
+#include "ingen/GraphObject.hpp"
+#include "shared/ResourceImpl.hpp"
+
+namespace Raul { class Maid; }
+
+namespace Ingen {
+
+namespace Shared { class LV2URIMap; }
+
+namespace Server {
+
+class PatchImpl;
+class Context;
+class ProcessContext;
+class BufferFactory;
+
+/** An object on the audio graph - Patch, Node, Port, etc.
+ *
+ * Each of these is a Raul::Deletable and so can be deleted in a realtime safe
+ * way from anywhere, and they all have a map of variable for clients to store
+ * arbitrary values in (which the engine puts no significance to whatsoever).
+ *
+ * \ingroup engine
+ */
+class GraphObjectImpl : virtual public GraphObject
+ , public Ingen::Shared::ResourceImpl
+{
+public:
+ virtual ~GraphObjectImpl() {}
+
+ const Raul::URI& uri() const { return _path; }
+ const Raul::Symbol& symbol() const { return _symbol; }
+
+ GraphObject* graph_parent() const { return _parent; }
+ GraphObjectImpl* parent() const { return _parent; }
+
+ //virtual void process(ProcessContext& context) = 0;
+
+ /** Rename */
+ virtual void set_path(const Raul::Path& new_path) {
+ _path = new_path;
+ _symbol = new_path.symbol();
+ }
+
+ const Raul::Atom& get_property(const Raul::URI& key) const;
+ void add_meta_property(const Raul::URI& key, const Raul::Atom& value);
+ void set_meta_property(const Raul::URI& key, const Raul::Atom& value);
+
+ /** The Patch this object is a child of. */
+ virtual PatchImpl* parent_patch() const;
+
+ /** Raul::Path is dynamically generated from parent to ease renaming */
+ const Raul::Path& path() const { return _path; }
+
+ SharedPtr<GraphObject> find_child(const std::string& name) const;
+
+ /** Prepare for a new (external) polyphony value.
+ *
+ * Preprocessor thread, poly is actually applied by apply_poly.
+ * \return true on success.
+ */
+ virtual bool prepare_poly(BufferFactory& bufs, uint32_t poly) = 0;
+
+ /** Apply a new (external) polyphony value.
+ *
+ * Audio thread.
+ *
+ * \param poly Must be <= the most recent value passed to prepare_poly.
+ * \param maid Any objects no longer needed will be pushed to this
+ */
+ virtual bool apply_poly(Raul::Maid& maid, uint32_t poly) = 0;
+
+protected:
+ GraphObjectImpl(Ingen::Shared::LV2URIMap& uris,
+ GraphObjectImpl* parent,
+ const Raul::Symbol& symbol);
+
+ GraphObjectImpl* _parent;
+ Raul::Path _path;
+ Raul::Symbol _symbol;
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_GRAPHOBJECTIMPL_HPP