89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
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*
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* Om is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* Om is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef INPUTPORT_H
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#define INPUTPORT_H
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#include <string>
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#include <cstdlib>
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#include <cassert>
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#include "PortBase.h"
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#include "List.h"
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#include "MidiMessage.h"
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using std::string;
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namespace Om {
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template <typename T> class ConnectionBase;
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template <typename T> class OutputPort;
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class Node;
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/** An input port on a Node or Patch.
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*
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* All ports have a Buffer, but the actual contents (data) of that buffer may be
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* set directly to the incoming connection's buffer if there's only one inbound
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* connection, to eliminate the need to copy/mix.
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*
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* If a port has multiple connections, they will be mixed down into the local
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* buffer and it will be used.
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*
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* \ingroup engine
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*/
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template <typename T>
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class InputPort : public PortBase<T>
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{
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public:
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InputPort(Node* node, const string& name, size_t index, size_t poly, PortInfo* port_info, size_t buffer_size);
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virtual ~InputPort() {}
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void add_connection(ListNode<ConnectionBase<T>*>* const c);
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ListNode<ConnectionBase<T>*>* remove_connection(const OutputPort<T>* const src_port);
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void prepare_buffers(size_t nframes);
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void tie(OutputPort<T>* const port);
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bool is_connected() const { return (m_connections.size() > 0); }
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bool is_connected_to(const OutputPort<T>* const port) const;
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private:
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// Prevent copies (Undefined)
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InputPort<T>(const InputPort<T>& copy);
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InputPort<T>& operator=(const InputPort<T>&);
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void update_buffers();
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List<ConnectionBase<T>*> m_connections;
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// This is just stupid...
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using PortBase<T>::m_is_tied;
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using PortBase<T>::m_tied_port;
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using PortBase<T>::m_buffers;
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using PortBase<T>::m_poly;
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using PortBase<T>::m_index;
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using PortBase<T>::m_buffer_size;
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using PortBase<T>::m_fixed_buffers;
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};
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template class InputPort<sample>;
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template class InputPort<MidiMessage>;
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} // namespace Om
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#endif // INPUTPORT_H
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