Abstract definition of rt-scheduler policy
[ardour.git] / libs / ardour / automation_watch.cc
index 91fe4d38edbcf727aa5830aa21dea432ee10adb0..ad05f3ac69b8db0bfac805a30d58dd39f85e6735 100644 (file)
@@ -22,6 +22,7 @@
 #include <glibmm/timer.h>
 
 #include "pbd/compose.h"
+#include "pbd/pthread_utils.h"
 
 #include "ardour/automation_control.h"
 #include "ardour/automation_watch.h"
@@ -44,9 +45,10 @@ AutomationWatch::instance ()
 
 AutomationWatch::AutomationWatch ()
        : _thread (0)
+       , _last_time (0)
        , _run_thread (false)
 {
-       
+
 }
 
 AutomationWatch::~AutomationWatch ()
@@ -59,6 +61,7 @@ AutomationWatch::~AutomationWatch ()
 
        Glib::Threads::Mutex::Lock lm (automation_watch_lock);
        automation_watches.clear ();
+       automation_connections.clear ();
 }
 
 void
@@ -66,7 +69,11 @@ AutomationWatch::add_automation_watch (boost::shared_ptr<AutomationControl> ac)
 {
        Glib::Threads::Mutex::Lock lm (automation_watch_lock);
        DEBUG_TRACE (DEBUG::Automation, string_compose ("now watching control %1 for automation, astate = %2\n", ac->name(), enum_2_string (ac->automation_state())));
-       automation_watches.insert (ac);
+       std::pair<AutomationWatches::iterator, bool> r = automation_watches.insert (ac);
+
+       if (!r.second) {
+               return;
+       }
 
        /* if an automation control is added here while the transport is
         * rolling, make sure that it knows that there is a write pass going
@@ -74,7 +81,7 @@ AutomationWatch::add_automation_watch (boost::shared_ptr<AutomationControl> ac)
         */
 
        if (_session && _session->transport_rolling() && ac->alist()->automation_write()) {
-               DEBUG_TRACE (DEBUG::Automation, string_compose ("\ttransport is rolling @ %1, audible = %2so enter write pass\n", 
+               DEBUG_TRACE (DEBUG::Automation, string_compose ("\ttransport is rolling @ %1, audible = %2so enter write pass\n",
                                                                _session->transport_speed(), _session->audible_frame()));
                /* add a guard point since we are already moving */
                ac->list()->set_in_write_pass (true, true, _session->audible_frame());
@@ -84,9 +91,9 @@ AutomationWatch::add_automation_watch (boost::shared_ptr<AutomationControl> ac)
         * creates reference cycles. we don't need to make the weak_ptr<>
         * explicit here, but it helps to remind us what is going on.
         */
-       
+
        boost::weak_ptr<AutomationControl> wac (ac);
-       ac->DropReferences.connect_same_thread (*this, boost::bind (&AutomationWatch::remove_weak_automation_watch, this, wac));
+       ac->DropReferences.connect_same_thread (automation_connections[ac], boost::bind (&AutomationWatch::remove_weak_automation_watch, this, wac));
 }
 
 void
@@ -107,9 +114,35 @@ AutomationWatch::remove_automation_watch (boost::shared_ptr<AutomationControl> a
        Glib::Threads::Mutex::Lock lm (automation_watch_lock);
        DEBUG_TRACE (DEBUG::Automation, string_compose ("remove control %1 from automation watch\n", ac->name()));
        automation_watches.erase (ac);
+       automation_connections.erase (ac);
        ac->list()->set_in_write_pass (false);
 }
 
+void
+AutomationWatch::transport_stop_automation_watches (framepos_t when)
+{
+       DEBUG_TRACE (DEBUG::Automation, "clear all automation watches\n");
+
+       AutomationWatches tmp;
+
+       {
+               Glib::Threads::Mutex::Lock lm (automation_watch_lock);
+               /* copy automation watches */
+               tmp = automation_watches;
+               /* clear existing container so that each
+                  ::remove_automation_watch() call from
+                  AutomationControl::stop_touch() is faster.
+               */
+
+               automation_watches.clear ();
+               automation_connections.clear ();
+       }
+
+       for (AutomationWatches::iterator i = tmp.begin(); i != tmp.end(); ++i) {
+               (*i)->stop_touch (when);
+       }
+}
+
 gint
 AutomationWatch::timer ()
 {
@@ -121,12 +154,30 @@ AutomationWatch::timer ()
                Glib::Threads::Mutex::Lock lm (automation_watch_lock);
 
                framepos_t time = _session->audible_frame ();
-
-               for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
-                       if ((*aw)->alist()->automation_write()) {
-                               (*aw)->list()->add (time, (*aw)->user_double());
+               if (time > _last_time) {  //we only write automation in the forward direction; this fixes automation-recording in a loop
+                       for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
+                               if ((*aw)->alist()->automation_write()) {
+                                       double val = (*aw)->user_double();
+                                       boost::shared_ptr<SlavableAutomationControl> sc = boost::dynamic_pointer_cast<SlavableAutomationControl> (*aw);
+                                       if (sc) {
+                                               val = sc->reduce_by_masters (val, true);
+                                       }
+                                       (*aw)->list()->add (time, val, true);
+                               }
+                       }
+               } else if (time != _last_time) {  //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)
+                       for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
+                               DEBUG_TRACE (DEBUG::Automation, string_compose ("%1: transport in rewind, speed %2, in write pass ? %3 writing ? %4\n",
+                                                                               (*aw)->name(), _session->transport_speed(), _session->transport_rolling(),
+                                                                               (*aw)->alist()->automation_write()));
+                               (*aw)->list()->set_in_write_pass (false);
+                               if ( (*aw)->alist()->automation_write() ) {
+                                       (*aw)->list()->set_in_write_pass (true, time);
+                               }
                        }
                }
+
+               _last_time = time;
        }
 
        return TRUE;
@@ -135,6 +186,7 @@ AutomationWatch::timer ()
 void
 AutomationWatch::thread ()
 {
+       pbd_set_thread_priority (pthread_self(), PBD_SCHED_FIFO, -25);
        while (_run_thread) {
                Glib::usleep ((gulong) floor (Config->get_automation_interval_msecs() * 1000));
                timer ();
@@ -157,7 +209,7 @@ AutomationWatch::set_session (Session* s)
        if (_session) {
                _run_thread = true;
                _thread = Glib::Threads::Thread::create (boost::bind (&AutomationWatch::thread, this));
-               
+
                _session->TransportStateChange.connect_same_thread (transport_connection, boost::bind (&AutomationWatch::transport_state_change, this));
        }
 }
@@ -171,11 +223,13 @@ AutomationWatch::transport_state_change ()
 
        bool rolling = _session->transport_rolling();
 
+       _last_time = _session->audible_frame ();
+
        {
                Glib::Threads::Mutex::Lock lm (automation_watch_lock);
 
                for (AutomationWatches::iterator aw = automation_watches.begin(); aw != automation_watches.end(); ++aw) {
-                       DEBUG_TRACE (DEBUG::Automation, string_compose ("%1: transport state changed, speed %2, in write pass ? %3 writing ? %4\n", 
+                       DEBUG_TRACE (DEBUG::Automation, string_compose ("%1: transport state changed, speed %2, in write pass ? %3 writing ? %4\n",
                                                                        (*aw)->name(), _session->transport_speed(), rolling,
                                                                        (*aw)->alist()->automation_write()));
                        if (rolling && (*aw)->alist()->automation_write()) {