1 files changed, 109 insertions, 0 deletions
diff --git a/src/server/NodeImpl.hpp b/src/server/NodeImpl.hpp
new file mode 100644
index 00000000..614801eb
--- /dev/null
+++ b/src/server/NodeImpl.hpp
@@ -0,0 +1,109 @@
+/*
+  This file is part of Ingen.
+  Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or 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 Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_ENGINE_NODEIMPL_HPP
+#define INGEN_ENGINE_NODEIMPL_HPP
+
+#include <cassert>
+#include <cstddef>
+#include <map>
+
+#include "ingen/Node.hpp"
+#include "ingen/Resource.hpp"
+#include "raul/Deletable.hpp"
+#include "raul/Path.hpp"
+
+namespace Raul { class Maid; }
+
+namespace Ingen {
+
+namespace Shared { class URIs; }
+
+namespace Server {
+
+class BufferFactory;
+class GraphImpl;
+class RunContext;
+
+/** An object on the audio graph (a Graph, Block, or Port).
+ *
+ * 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 NodeImpl : public Node
+{
+public:
+	const Raul::Symbol& symbol() const { return _symbol; }
+
+	Node*     graph_parent() const { return _parent; }
+	NodeImpl* parent()       const { return _parent; }
+
+	/** Rename */
+	virtual void set_path(const Raul::Path& new_path) {
+		_path = new_path;
+		const char* const new_sym = new_path.symbol();
+		if (new_sym[0] != '\0') {
+			_symbol = Raul::Symbol(new_sym);
+		}
+		set_uri(path_to_uri(new_path));
+	}
+
+	const Atom& get_property(const URI& key) const;
+
+	/** The Graph this object is a child of. */
+	virtual GraphImpl* parent_graph() const;
+
+	const Raul::Path& path() const { return _path; }
+
+	/** 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.
+	 *
+	 * \param context Process context (process thread only).
+	 * \param poly Must be <= the most recent value passed to prepare_poly.
+	 */
+	virtual bool apply_poly(RunContext& context, uint32_t poly) = 0;
+
+	/** Return true iff this is main (the top level Node).
+	 *
+	 * This is sometimes called "the root graph", but the term "main" is used
+	 * to avoid ambiguity with the root path, since main does not have the path
+	 * "/", but usually "/main" to leave namespace for non-node things.
+	 */
+	bool is_main() const { return !_parent; }
+
+protected:
+	NodeImpl(const Ingen::URIs&  uris,
+	         NodeImpl*           parent,
+	         const Raul::Symbol& symbol);
+
+	NodeImpl*    _parent;
+	Raul::Path   _path;
+	Raul::Symbol _symbol;
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_NODEIMPL_HPP