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 ()
53 AutomationWatch::~AutomationWatch ()
61 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
62 automation_watches.clear ();
66 AutomationWatch::add_automation_watch (boost::shared_ptr<AutomationControl> ac)
68 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
69 DEBUG_TRACE (DEBUG::Automation, string_compose ("now watching control %1 for automation, astate = %2\n", ac->name(), enum_2_string (ac->automation_state())));
70 automation_watches.insert (ac);
72 /* if an automation control is added here while the transport is
73 * rolling, make sure that it knows that there is a write pass going
74 * on, rather than waiting for the transport to start.
77 if (_session && _session->transport_rolling() && ac->alist()->automation_write()) {
78 DEBUG_TRACE (DEBUG::Automation, string_compose ("\ttransport is rolling @ %1, audible = %2so enter write pass\n",
79 _session->transport_speed(), _session->audible_frame()));
80 /* add a guard point since we are already moving */
81 ac->list()->set_in_write_pass (true, true, _session->audible_frame());
84 /* we can't store shared_ptr<Destructible> in connections because it
85 * creates reference cycles. we don't need to make the weak_ptr<>
86 * explicit here, but it helps to remind us what is going on.
89 boost::weak_ptr<AutomationControl> wac (ac);
90 ac->DropReferences.connect_same_thread (*this, boost::bind (&AutomationWatch::remove_weak_automation_watch, this, wac));
94 AutomationWatch::remove_weak_automation_watch (boost::weak_ptr<AutomationControl> wac)
96 boost::shared_ptr<AutomationControl> ac = wac.lock();
102 remove_automation_watch (ac);
106 AutomationWatch::remove_automation_watch (boost::shared_ptr<AutomationControl> ac)
108 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
109 DEBUG_TRACE (DEBUG::Automation, string_compose ("remove control %1 from automation watch\n", ac->name()));
110 automation_watches.erase (ac);
111 ac->list()->set_in_write_pass (false);
115 AutomationWatch::timer ()
117 if (!_session || !_session->transport_rolling()) {
122 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
124 framepos_t time = _session->audible_frame ();
125 if (time > _last_time) { //we only write automation in the forward direction; this fixes automation-recording in a loop
126 for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
127 if ((*aw)->alist()->automation_write()) {
128 (*aw)->list()->add (time, (*aw)->user_double(), true);
131 } else { //transport stopped or reversed. stop the automation pass and start a new one (for bonus points, someday store the previous pass in an undo record)
132 for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
133 DEBUG_TRACE (DEBUG::Automation, string_compose ("%1: transport in rewind, speed %2, in write pass ? %3 writing ? %4\n",
134 (*aw)->name(), _session->transport_speed(), rolling,
135 (*aw)->alist()->automation_write()));
136 (*aw)->list()->set_in_write_pass (false);
137 if ( (*aw)->alist()->automation_write() ) {
138 (*aw)->list()->set_in_write_pass (true);
150 AutomationWatch::thread ()
152 while (_run_thread) {
153 Glib::usleep ((gulong) floor (Config->get_automation_interval_msecs() * 1000));
159 AutomationWatch::set_session (Session* s)
161 transport_connection.disconnect ();
169 SessionHandlePtr::set_session (s);
173 _thread = Glib::Threads::Thread::create (boost::bind (&AutomationWatch::thread, this));
175 _session->TransportStateChange.connect_same_thread (transport_connection, boost::bind (&AutomationWatch::transport_state_change, this));
180 AutomationWatch::transport_state_change ()
186 bool rolling = _session->transport_rolling();
188 _last_time = _session->audible_frame ();
191 Glib::Threads::Mutex::Lock lm (automation_watch_lock);
193 for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
194 DEBUG_TRACE (DEBUG::Automation, string_compose ("%1: transport state changed, speed %2, in write pass ? %3 writing ? %4\n",
195 (*aw)->name(), _session->transport_speed(), rolling,
196 (*aw)->alist()->automation_write()));
197 if (rolling && (*aw)->alist()->automation_write()) {
198 (*aw)->list()->set_in_write_pass (true);
200 (*aw)->list()->set_in_write_pass (false);