85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
/*
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* Copyright (C) 2014-2017 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more 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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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __ardour_delayline_h__
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#define __ardour_delayline_h__
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#include <memory>
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#include <boost/shared_array.hpp>
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#include "ardour/types.h"
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#include "ardour/processor.h"
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namespace ARDOUR {
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class BufferSet;
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class ChanCount;
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class Session;
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/** Meters peaks on the input and stores them for access.
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*/
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class LIBARDOUR_API DelayLine : public Processor {
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public:
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DelayLine (Session& s, const std::string& name);
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~DelayLine ();
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bool set_name (const std::string& str);
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bool set_delay (samplecnt_t signal_delay);
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samplecnt_t delay () { return _pending_delay; }
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/* processor interface */
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bool display_to_user () const { return false; }
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void run (BufferSet&, samplepos_t, samplepos_t, double, pframes_t, bool);
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bool configure_io (ChanCount in, ChanCount out);
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bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
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void flush ();
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protected:
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XMLNode& state () const;
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private:
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void allocate_pending_buffers (samplecnt_t, ChanCount const&);
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void write_to_rb (Sample* rb, Sample* src, samplecnt_t); // honor _woff, _bsiz.
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void read_from_rb (Sample* rb, Sample* dst, samplecnt_t); // honor _roff, _bsiz
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friend class IO;
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samplecnt_t _bsiz;
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samplecnt_t _bsiz_mask;
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samplecnt_t _delay, _pending_delay;
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sampleoffset_t _roff, _woff;
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bool _pending_flush;
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typedef std::vector<boost::shared_array<Sample> > AudioDlyBuf;
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typedef std::vector<boost::shared_array<MidiBuffer> > MidiDlyBuf;
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AudioDlyBuf _buf;
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boost::shared_ptr<MidiBuffer> _midi_buf;
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#ifndef NDEBUG
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Glib::Threads::Mutex _set_delay_mutex;
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#endif
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};
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} // namespace ARDOUR
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#endif // __ardour_meter_h__
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