2 Copyright (C) 2012 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.
22 #include <glibmm/timer.h>
24 #include "pbd/compose.h"
26 #include "ardour/automation_control.h"
27 #include "ardour/automation_watch.h"
28 #include "ardour/debug.h"
29 #include "ardour/session.h"
31 using namespace ARDOUR;
34 AutomationWatch* AutomationWatch::_instance = 0;
37 AutomationWatch::instance ()
40 _instance = new AutomationWatch;
45 AutomationWatch::AutomationWatch ()
52 AutomationWatch::~AutomationWatch ()
60 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
61 automation_watches.clear ();
65 AutomationWatch::add_automation_watch (boost::shared_ptr<AutomationControl> ac)
67 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
68 DEBUG_TRACE (DEBUG::Automation, string_compose ("now watching control %1 for automation, astate = %2\n", ac->name(), enum_2_string (ac->automation_state())));
69 automation_watches.insert (ac);
71 /* if an automation control is added here while the transport is
72 * rolling, make sure that it knows that there is a write pass going
73 * on, rather than waiting for the transport to start.
76 if (_session && _session->transport_rolling() && ac->alist()->automation_write()) {
77 DEBUG_TRACE (DEBUG::Automation, string_compose ("\ttransport is rolling @ %1, audible = %2so enter write pass\n",
78 _session->transport_speed(), _session->audible_frame()));
79 /* add a guard point since we are already moving */
80 ac->list()->set_in_write_pass (true, true, _session->audible_frame());
83 /* we can't store shared_ptr<Destructible> in connections because it
84 * creates reference cycles. we don't need to make the weak_ptr<>
85 * explicit here, but it helps to remind us what is going on.
88 boost::weak_ptr<AutomationControl> wac (ac);
89 ac->DropReferences.connect_same_thread (*this, boost::bind (&AutomationWatch::remove_weak_automation_watch, this, wac));
93 AutomationWatch::remove_weak_automation_watch (boost::weak_ptr<AutomationControl> wac)
95 boost::shared_ptr<AutomationControl> ac = wac.lock();
101 remove_automation_watch (ac);
105 AutomationWatch::remove_automation_watch (boost::shared_ptr<AutomationControl> ac)
107 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
108 DEBUG_TRACE (DEBUG::Automation, string_compose ("remove control %1 from automation watch\n", ac->name()));
109 automation_watches.erase (ac);
110 ac->list()->set_in_write_pass (false);
114 AutomationWatch::timer ()
116 if (!_session || !_session->transport_rolling()) {
121 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
123 framepos_t time = _session->audible_frame ();
125 for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
126 if ((*aw)->alist()->automation_write()) {
127 (*aw)->list()->add (time, (*aw)->user_double());
136 AutomationWatch::thread ()
138 while (_run_thread) {
139 Glib::usleep ((gulong) floor (Config->get_automation_interval_msecs() * 1000));
145 AutomationWatch::set_session (Session* s)
147 transport_connection.disconnect ();
155 SessionHandlePtr::set_session (s);
159 _thread = Glib::Threads::Thread::create (boost::bind (&AutomationWatch::thread, this));
161 _session->TransportStateChange.connect_same_thread (transport_connection, boost::bind (&AutomationWatch::transport_state_change, this));
166 AutomationWatch::transport_state_change ()
172 bool rolling = _session->transport_rolling();
175 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
177 for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
178 DEBUG_TRACE (DEBUG::Automation, string_compose ("%1: transport state changed, speed %2, in write pass ? %3 writing ? %4\n",
179 (*aw)->name(), _session->transport_speed(), rolling,
180 (*aw)->alist()->automation_write()));
181 if (rolling && (*aw)->alist()->automation_write()) {
182 (*aw)->list()->set_in_write_pass (true);
184 (*aw)->list()->set_in_write_pass (false);