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Diffstat (limited to 'src/engine/internals/Delay.hpp')
-rw-r--r-- | src/engine/internals/Delay.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/engine/internals/Delay.hpp b/src/engine/internals/Delay.hpp new file mode 100644 index 00000000..077c65f9 --- /dev/null +++ b/src/engine/internals/Delay.hpp @@ -0,0 +1,79 @@ +/* This file is part of Ingen. + * Copyright (C) 2007-2009 Dave Robillard <http://drobilla.net> + * + * Ingen 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. + * + * 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 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., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef INGEN_INTERNALS_DELAY_HPP +#define INGEN_INTERNALS_DELAY_HPP + +#include <string> +#include <math.h> +#include "types.hpp" +//#include "Buffer.hpp" +//#include "BufferFactory.hpp" +#include "NodeBase.hpp" + +namespace Ingen { + +class InputPort; +class OutputPort; +class InternalPlugin; +class BufferFactory; + +namespace Internals { + + +/** MIDI note input node. + * + * For pitched instruments like keyboard, etc. + * + * \ingroup engine + */ +class DelayNode : public NodeBase +{ +public: + DelayNode(BufferFactory& bufs, const std::string& path, bool polyphonic, PatchImpl* parent, SampleRate srate); + ~DelayNode(); + + void activate(BufferFactory& bufs); + + void process(ProcessContext& context); + + static InternalPlugin& internal_plugin(); + + float delay_samples() const { return _delay_samples; } + +private: + inline float& buffer_at(long phase) const { return _buffer[phase & _buffer_mask]; } + + InputPort* _delay_port; + InputPort* _in_port; + OutputPort* _out_port; + + typedef long Phase; + + float* _buffer; + uint32_t _buffer_length; + uint32_t _buffer_mask; + Phase _write_phase; + float _last_delay_time; + float _delay_samples; +}; + + +} // namespace Ingen +} // namespace Internals + +#endif // INGEN_INTERNALS_DELAY_HPP |