From: Paul Davis <paul@linuxaudiosystems.com>
Date: Fri, 23 Jun 2017 20:34:12 +0000 (-0400)
Subject: update disk writer input latency at transport stop
X-Git-Tag: 6.0-pre0~97
X-Git-Url: https://main.carlh.net/gitweb/?p=ardour.git;a=commitdiff_plain;h=c6bd03352382094b9d8996c16c1a681c2cb495c3

update disk writer input latency at transport stop
---

diff --git a/libs/ardour/ardour/track.h b/libs/ardour/ardour/track.h
index 77755ab088..33903c2b91 100644
--- a/libs/ardour/ardour/track.h
+++ b/libs/ardour/ardour/track.h
@@ -83,7 +83,7 @@ class LIBARDOUR_API Track : public Route, public Recordable
 	bool can_record();
 
 	void set_latency_compensation (framecnt_t);
-
+	void update_latency_information ();
 	enum FreezeState {
 		NoFreeze,
 		Frozen,
@@ -146,7 +146,6 @@ class LIBARDOUR_API Track : public Route, public Recordable
 	void ensure_input_monitoring (bool);
 	bool destructive () const;
 	std::list<boost::shared_ptr<Source> > & last_capture_sources ();
-	void set_capture_offset ();
 	std::string steal_write_source_name ();
 	void reset_write_sources (bool, bool force = false);
 	float playback_buffer_load () const;
diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 87adc25275..01c8bfa62f 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -5737,7 +5737,7 @@ Session::graph_reordered ()
 	for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
 		boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
 		if (tr) {
-			tr->set_capture_offset ();
+			tr->update_latency_information ();
 		}
 	}
 }
@@ -6936,7 +6936,7 @@ Session::post_capture_latency ()
 	for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
 		boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
 		if (tr) {
-			tr->set_capture_offset ();
+			tr->update_latency_information ();
 		}
 	}
 }
@@ -7045,7 +7045,7 @@ Session::update_latency_compensation (bool force_whole_graph)
 		if (!tr) {
 			continue;
 		}
-		tr->set_capture_offset ();
+		tr->update_latency_information ();
 	}
 }
 
@@ -7378,8 +7378,8 @@ Session::auto_connect_thread_run ()
 			/* this is only used for updating plugin latencies, the
 			 * graph does not change. so it's safe in general.
 			 * BUT..
-			 * .. update_latency_compensation () entails set_capture_offset()
-			 * which calls Diskstream::set_capture_offset () which
+			 * .. update_latency_compensation () entails Track::update_latency_information()
+			 * which calls DiskWriter::set_capture_offset () which
 			 * modifies the capture offset... which can be a proplem
 			 * in "prepare_to_stop"
 			 */
diff --git a/libs/ardour/track.cc b/libs/ardour/track.cc
index d1f49fab63..c9f581add2 100644
--- a/libs/ardour/track.cc
+++ b/libs/ardour/track.cc
@@ -627,9 +627,15 @@ Track::last_capture_sources ()
 }
 
 void
-Track::set_capture_offset ()
+Track::update_latency_information ()
 {
-	_disk_writer->set_capture_offset ();
+	Glib::Threads::RWLock::ReaderLock lr (_processor_lock);
+	framecnt_t chain_latency = _input->latency ();
+
+	for (ProcessorList::iterator p = _processors.begin(); p != _processors.end(); ++p) {
+		(*p)->set_input_latency (chain_latency);
+		chain_latency += (*p)->signal_latency ();
+	}
 }
 
 std::string