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-/*
- 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