More juggling

git-svn-id: http://svn.drobilla.net/lad/grauph@15 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 88 insertions, 0 deletions

diff --git a/src/libs/engine/InputPort.h b/src/libs/engine/InputPort.h
new file mode 100644
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+++ b/src/libs/engine/InputPort.h
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+/* This file is part of Om.  Copyright (C) 2006 Dave Robillard.
+ * 
+ * Om 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.
+ * 
+ * Om 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.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef INPUTPORT_H
+#define INPUTPORT_H
+
+#include <string>
+#include <cstdlib>
+#include <cassert>
+#include "PortBase.h"
+#include "List.h"
+#include "MidiMessage.h"
+using std::string;
+
+namespace Om {
+
+template <typename T> class ConnectionBase;
+template <typename T> class OutputPort;
+class Node;
+
+
+/** An input port on a Node or Patch.
+ *
+ * All ports have a Buffer, but the actual contents (data) of that buffer may be
+ * set directly to the incoming connection's buffer if there's only one inbound
+ * connection, to eliminate the need to copy/mix.
+ *
+ * If a port has multiple connections, they will be mixed down into the local
+ * buffer and it will be used.
+ *
+ * \ingroup engine
+ */
+template <typename T>
+class InputPort : public PortBase<T>
+{
+public:
+	InputPort(Node* node, const string& name, size_t index, size_t poly, PortInfo* port_info, size_t buffer_size);
+	virtual ~InputPort() {}
+	
+	void                          add_connection(ListNode<ConnectionBase<T>*>* const c);
+	ListNode<ConnectionBase<T>*>* remove_connection(const OutputPort<T>* const src_port);
+
+	void prepare_buffers(size_t nframes);
+	
+	void tie(OutputPort<T>* const port);
+
+	bool is_connected() const { return (m_connections.size() > 0); }
+	bool is_connected_to(const OutputPort<T>* const port) const;
+	
+private:
+	// Prevent copies (Undefined)
+	InputPort<T>(const InputPort<T>& copy);
+	InputPort<T>& operator=(const InputPort<T>&);
+
+	void update_buffers();
+
+	List<ConnectionBase<T>*> m_connections;
+
+	// This is just stupid...
+	using PortBase<T>::m_is_tied;
+	using PortBase<T>::m_tied_port;
+	using PortBase<T>::m_buffers;
+	using PortBase<T>::m_poly;
+	using PortBase<T>::m_index;
+	using PortBase<T>::m_buffer_size;
+	using PortBase<T>::m_fixed_buffers;
+};
+
+
+template class InputPort<sample>;
+template class InputPort<MidiMessage>;
+
+} // namespace Om
+
+#endif // INPUTPORT_H