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-/*
- This file is part of Ingen.
- Copyright 2007-2016 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_ARC_IMPL_HPP
-#define INGEN_ENGINE_ARC_IMPL_HPP
-
-#include <cstdlib>
-
-#include <boost/intrusive/slist.hpp>
-
-#include "ingen/Arc.hpp"
-#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
-#include "raul/Deletable.hpp"
-
-#include "BufferRef.hpp"
-#include "RunContext.hpp"
-
-namespace Ingen {
-namespace Server {
-
-class PortImpl;
-class InputPort;
-
-/** Represents a single inbound connection for an InputPort.
- *
- * This can be a group of ports (coming from a polyphonic Block) or
- * a single Port. This class exists basically as an abstraction of mixing
- * down polyphonic inputs, so InputPort can just deal with mixing down
- * multiple connections (oblivious to the polyphonic situation of the
- * connection itself).
- *
- * This is stored in an intrusive slist in InputPort.
- *
- * \ingroup engine
- */
-class ArcImpl
- : private Raul::Noncopyable
- , public Arc
- , public boost::intrusive::slist_base_hook<>
-{
-public:
- ArcImpl(PortImpl* tail, PortImpl* head);
- ~ArcImpl();
-
- inline PortImpl* tail() const { return _tail; }
- inline PortImpl* head() const { return _head; }
-
- const Raul::Path& tail_path() const;
- const Raul::Path& head_path() const;
-
- /** Get the buffer for a particular voice.
- * An Arc is smart - it knows the destination port requesting the
- * buffer, and will return accordingly (e.g. the same buffer for every
- * voice in a mono->poly arc).
- */
- BufferRef buffer(uint32_t voice, SampleCount offset=0) const;
-
- /** Whether this arc must mix down voices into a local buffer */
- bool must_mix() const;
-
- static bool can_connect(const PortImpl* src, const InputPort* dst);
-
-protected:
- PortImpl* const _tail;
- PortImpl* const _head;
-};
-
-} // namespace Server
-} // namespace Ingen
-
-#endif // INGEN_ENGINE_ARC_IMPL_HPP