2 Copyright (C) 2002 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef __ardour_slave_h__
22 #define __ardour_slave_h__
26 #include <jack/jack.h>
29 #include <sigc++/signal.h>
30 #include <ardour/ardour.h>
31 #include <midi++/parser.h>
32 #include <midi++/types.h>
46 virtual bool speed_and_position (float&, jack_nframes_t&) = 0;
47 virtual bool locked() const = 0;
48 virtual bool ok() const = 0;
49 virtual bool starting() const { return false; }
50 virtual jack_nframes_t resolution() const = 0;
51 virtual bool requires_seekahead () const = 0;
55 class MTC_Slave : public Slave, public sigc::trackable {
57 MTC_Slave (Session&, MIDI::Port&);
60 void rebind (MIDI::Port&);
61 bool speed_and_position (float&, jack_nframes_t&);
65 void handle_locate (const MIDI::byte*);
67 jack_nframes_t resolution() const;
68 bool requires_seekahead () const { return true; }
73 std::vector<sigc::connection> connections;
80 jack_nframes_t position;
81 jack_nframes_t timestamp;
92 jack_nframes_t mtc_frame; /* current time */
93 jack_nframes_t last_inbound_frame; /* when we got it; audio clocked */
96 jack_nframes_t first_mtc_frame;
97 jack_nframes_t first_mtc_time;
99 static const int32_t accumulator_size = 128;
100 float accumulator[accumulator_size];
101 int32_t accumulator_index;
102 bool have_first_accumulated_speed;
105 void update_mtc_qtr (MIDI::Parser&);
106 void update_mtc_time (const MIDI::byte *, bool);
107 void update_mtc_status (MIDI::Parser::MTC_Status);
108 void read_current (SafeTime *) const;
111 class ADAT_Slave : public Slave
117 bool speed_and_position (float& speed, jack_nframes_t& pos) {
123 bool locked() const { return false; }
124 bool ok() const { return false; }
125 jack_nframes_t resolution() const { return 1; }
126 bool requires_seekahead () const { return true; }
129 class JACK_Slave : public Slave
132 JACK_Slave (jack_client_t*);
135 bool speed_and_position (float& speed, jack_nframes_t& pos);
137 bool starting() const { return _starting; }
140 jack_nframes_t resolution() const { return 1; }
141 bool requires_seekahead () const { return false; }
151 #endif /* __ardour_slave_h__ */