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();
42 typedef std::list<boost::shared_ptr<TransportMaster> > TransportMasters;
44 int add (SyncSource type, std::string const & name, bool removeable = true);
45 int remove (std::string const & name);
48 PBD::Signal1<void,boost::shared_ptr<TransportMaster> > Added;
49 PBD::Signal1<void,boost::shared_ptr<TransportMaster> > Removed; // null argument means "clear"
51 double pre_process_transport_masters (pframes_t, samplepos_t session_transport_position);
53 double get_current_speed_in_process_context() const { return _master_speed; }
54 samplepos_t get_current_position_in_process_context() const { return _master_position; }
56 boost::shared_ptr<TransportMaster> current() const { return _current_master; }
57 int set_current (boost::shared_ptr<TransportMaster>);
58 int set_current (SyncSource);
59 int set_current (std::string const &);
61 PBD::Signal2<void,boost::shared_ptr<TransportMaster>, boost::shared_ptr<TransportMaster> > CurrentChanged;
63 int set_state (XMLNode const &, int);
66 void set_session (Session*);
67 Session* session() const { return _session; }
69 bool master_invalid_this_cycle() const { return _master_invalid_this_cycle; }
71 boost::shared_ptr<TransportMaster> master_by_type (SyncSource src) const;
72 boost::shared_ptr<TransportMaster> master_by_name (std::string const &) const;
74 TransportMasters const & transport_masters() const { return _transport_masters; }
76 static const std::string state_node_name;
79 TransportMasterManager();
81 TransportMasters _transport_masters;
82 mutable Glib::Threads::RWLock lock;
84 samplepos_t _master_position;
85 boost::shared_ptr<TransportMaster> _current_master;
88 bool _master_invalid_this_cycle;
90 // a DLL to chase the transport master
92 int transport_dll_initstate;
93 double t0; /// time at the beginning of ???
94 double t1; /// calculated end of the ???
95 double e2; /// second order loop error
96 double bandwidth; /// DLL filter bandwidth
97 double b, c, omega; /// DLL filter coefficients
99 void init_transport_master_dll (double speed, samplepos_t pos);
100 int master_dll_initstate;
102 static TransportMasterManager* _instance;
104 int add_locked (boost::shared_ptr<TransportMaster>);
105 double compute_matching_master_speed (pframes_t nframes, samplepos_t, bool& locate_required);
106 int set_current_locked (boost::shared_ptr<TransportMaster>);
108 PBD::ScopedConnection config_connection;
109 void parameter_changed (std::string const & what);
112 } // namespace ARDOUR
114 #endif /* __ardour_transport_master_manager_h__ */