/* 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 CONNECTIONBASE_H #define CONNECTIONBASE_H #include "util/types.h" #include "OutputPort.h" #include "Connection.h" namespace Om { class MidiMessage; class Port; template <typename T> class InputPort; /** A Connection with a type. * * \ingroup engine */ template <typename T> class ConnectionBase : public Connection { public: ConnectionBase(OutputPort<T>* const src_port, InputPort<T>* const dst_port); virtual ~ConnectionBase(); void prepare_buffers(); inline OutputPort<T>* src_port() const { return (OutputPort<T>*)m_src_port; } inline InputPort<T>* dst_port() const { return (InputPort<T>*)m_dst_port; } /** Used by some (recursive) events to prevent double disconnections */ bool pending_disconnection() { return m_pending_disconnection; } void pending_disconnection(bool b) { m_pending_disconnection = b; } /** Get the buffer for a particular voice. * A ConnectionBase is smart - it knows the destination port respondering the * buffer, and will return accordingly (ie the same buffer for every voice * in a mono->poly connection). */ inline Buffer<T>* buffer(size_t voice) const; private: // Disallow copies (undefined) ConnectionBase(const ConnectionBase& copy); ConnectionBase& operator=(const ConnectionBase&); Buffer<T>* m_local_buffer; ///< Only used for poly->mono connections bool m_is_poly_to_mono; size_t m_buffer_size; bool m_pending_disconnection; }; template <> inline Buffer<sample>* ConnectionBase<sample>::buffer(size_t voice) const { PortBase<sample>* const src_port = (PortBase<sample>*)m_src_port; if (m_is_poly_to_mono) { return m_local_buffer; } else { if (src_port->poly() == 1) return src_port->buffer(0); else return src_port->buffer(voice); } } template <> inline Buffer<MidiMessage>* ConnectionBase<MidiMessage>::buffer(size_t voice) const { // No such thing as polyphonic MIDI ports assert(m_src_port->poly() == 1); assert(m_dst_port->poly() == 1); PortBase<MidiMessage>* const src_port = (PortBase<MidiMessage>*)m_src_port; return src_port->buffer(0); } template class ConnectionBase<sample>; template class ConnectionBase<MidiMessage>; } // namespace Om #endif // CONNECTIONBASE_H