2 * Copyright (C) 2018 Paul Davis (paul@linuxaudiosystems.com)
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, or (at your option)
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 Foundation,
16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 #ifndef __ardour_transport_master_manager_h__
20 #define __ardour_transport_master_manager_h__
24 #include <boost/noncopyable.hpp>
26 #include "ardour/transport_master.h"
27 #include "ardour/types.h"
31 class UI_TransportMaster;
33 class LIBARDOUR_API TransportMasterManager : public boost::noncopyable
36 ~TransportMasterManager ();
40 static TransportMasterManager& instance();
41 static bool exists() { return _instance != 0; }
43 typedef std::list<boost::shared_ptr<TransportMaster> > TransportMasters;
45 int add (SyncSource type, std::string const & name, bool removeable = true);
46 int remove (std::string const & name);
49 PBD::Signal1<void,boost::shared_ptr<TransportMaster> > Added;
50 PBD::Signal1<void,boost::shared_ptr<TransportMaster> > Removed; // null argument means "clear"
52 double pre_process_transport_masters (pframes_t, samplepos_t session_transport_position);
54 double get_current_speed_in_process_context() const { return _master_speed; }
55 samplepos_t get_current_position_in_process_context() const { return _master_position; }
57 boost::shared_ptr<TransportMaster> current() const { return _current_master; }
58 int set_current (boost::shared_ptr<TransportMaster>);
59 int set_current (SyncSource);
60 int set_current (std::string const &);
62 PBD::Signal2<void,boost::shared_ptr<TransportMaster>, boost::shared_ptr<TransportMaster> > CurrentChanged;
64 int set_state (XMLNode const &, int);
67 void set_session (Session*);
68 Session* session() const { return _session; }
70 bool master_invalid_this_cycle() const { return _master_invalid_this_cycle; }
72 boost::shared_ptr<TransportMaster> master_by_type (SyncSource src) const;
73 boost::shared_ptr<TransportMaster> master_by_name (std::string const &) const;
75 TransportMasters const & transport_masters() const { return _transport_masters; }
77 static const std::string state_node_name;
80 TransportMasterManager();
82 TransportMasters _transport_masters;
83 mutable Glib::Threads::RWLock lock;
85 samplepos_t _master_position;
86 boost::shared_ptr<TransportMaster> _current_master;
89 bool _master_invalid_this_cycle;
91 // a DLL to chase the transport master
93 int transport_dll_initstate;
94 double t0; /// time at the beginning of ???
95 double t1; /// calculated end of the ???
96 double e2; /// second order loop error
97 double bandwidth; /// DLL filter bandwidth
98 double b, c, omega; /// DLL filter coefficients
100 void init_transport_master_dll (double speed, samplepos_t pos);
101 int master_dll_initstate;
103 static TransportMasterManager* _instance;
105 int add_locked (boost::shared_ptr<TransportMaster>);
106 double compute_matching_master_speed (pframes_t nframes, samplepos_t, bool& locate_required);
107 int set_current_locked (boost::shared_ptr<TransportMaster>);
109 PBD::ScopedConnection config_connection;
110 void parameter_changed (std::string const & what);
113 } // namespace ARDOUR
115 #endif /* __ardour_transport_master_manager_h__ */