2 Copyright (C) 2006, 2013 Paul Davis
3 Copyright (C) 2013, 2014 Robin Gareus <robin@gareus.org>
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the Free
7 Software Foundation; either version 2 of the License, or (at your option)
10 This program is distributed in the hope that it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_delayline_h__
21 #define __ardour_delayline_h__
23 #include <boost/shared_ptr.hpp>
24 #include <boost/shared_array.hpp>
26 #include "ardour/types.h"
27 #include "ardour/processor.h"
35 /** Meters peaks on the input and stores them for access.
37 class LIBARDOUR_API DelayLine : public Processor {
40 DelayLine (Session& s, const std::string& name);
43 bool set_name (const std::string& str);
44 bool set_delay (samplecnt_t signal_delay);
45 samplecnt_t delay () { return _pending_delay; }
47 /* processor interface */
48 bool display_to_user () const { return false; }
49 void run (BufferSet&, samplepos_t, samplepos_t, double, pframes_t, bool);
50 bool configure_io (ChanCount in, ChanCount out);
51 bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
58 void allocate_pending_buffers (samplecnt_t, ChanCount const&);
60 void write_to_rb (Sample* rb, Sample* src, samplecnt_t); // honor _woff, _bsiz.
61 void read_from_rb (Sample* rb, Sample* dst, samplecnt_t); // honor _roff, _bsiz
66 samplecnt_t _bsiz_mask;
67 samplecnt_t _delay, _pending_delay;
68 sampleoffset_t _roff, _woff;
71 typedef std::vector<boost::shared_array<Sample> > AudioDlyBuf;
72 typedef std::vector<boost::shared_array<MidiBuffer> > MidiDlyBuf;
75 boost::shared_ptr<MidiBuffer> _midi_buf;
78 Glib::Threads::Mutex _set_delay_mutex;
84 #endif // __ardour_meter_h__