add new files to source tree

1 files changed, 73 insertions, 0 deletions

diff --git a/libs/ardour/record_enable_control.cc b/libs/ardour/record_enable_control.cc
new file mode 100644
index 0000000000..f71fd5034b
--- /dev/null
+++ b/libs/ardour/record_enable_control.cc
@@ -0,0 +1,73 @@
+/*
+    Copyright (C) 2016 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the Free
+    Software Foundation; either version 2 of the License, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "ardour/audioengine.h"
+#include "ardour/record_enable_control.h"
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+
+RecordEnableControl::RecordEnableControl (Session& session, std::string const & name, Recordable& r)
+	: SlavableAutomationControl (session, RecEnableAutomation, ParameterDescriptor (RecEnableAutomation),
+	                             boost::shared_ptr<AutomationList>(new AutomationList(Evoral::Parameter(RecEnableAutomation))),
+	                             name)
+	, _recordable (r)
+{
+	_list->set_interpolation(Evoral::ControlList::Discrete);
+
+	/* record-enable changes must be synchronized by the process cycle */
+	set_flags (Controllable::Flag (flags() | Controllable::RealTime));
+}
+
+void
+RecordEnableControl::set_value (double val, Controllable::GroupControlDisposition gcd)
+{
+	/* do the non-RT part of rec-enabling first - the RT part will be done
+	 * on the next process cycle. This does mean that theoretically we are
+	 * doing things provisionally on the assumption that the rec-enable
+	 * change will work, but this had better be a solid assumption for
+	 * other reasons.
+	 */
+
+	if (!AudioEngine::instance()->in_process_thread()) {
+		if (_recordable.prep_record_enabled (val)) {
+			/* failed */
+			std::cerr << "Prep rec-enable failed\n";
+			return;
+		}
+	}
+
+	/* Because we are marked as a RealTime control, this will queue
+	   up the control change to be executed in a realtime context.
+	*/
+	SlavableAutomationControl::set_value (val, gcd);
+}
+
+void
+RecordEnableControl::actually_set_value (double val, Controllable::GroupControlDisposition gcd)
+{
+	if (val && !_recordable.can_be_record_enabled()) {
+		std::cerr << "rec-enable not allowed\n";
+		return;
+	}
+
+	SlavableAutomationControl::actually_set_value (val, gcd);
+}
+