dynamic playback & capture buffer resizing (though transport is stopped first)

git-svn-id: svn://localhost/ardour2/branches/3.0@7250 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 15 insertions, 0 deletions

diff --git a/libs/ardour/butler.cc b/libs/ardour/butler.cc
index 1eb96dea35..1efca35196 100644
--- a/libs/ardour/butler.cc
+++ b/libs/ardour/butler.cc
@@ -50,6 +50,8 @@ Butler::Butler(Session& s)
 {
 	g_atomic_int_set(&should_do_transport_work, 0);
 	SessionEvent::pool->set_trash (&pool_trash);
+
+        Config->ParameterChanged.connect_same_thread (*this, boost::bind (&Butler::config_changed, this, _1));
 }
 
 Butler::~Butler()
@@ -57,6 +59,19 @@ Butler::~Butler()
 	terminate_thread ();
 }
 
+void
+Butler::config_changed (std::string p)
+{
+        if (p == "playback-buffer-seconds") {
+                /* size is in Samples, not bytes */
+                audio_dstream_playback_buffer_size = (uint32_t) floor (Config->get_audio_playback_buffer_seconds() * _session.frame_rate());
+                _session.adjust_playback_buffering ();
+        } else if (p == "capture-buffer-seconds") {
+                audio_dstream_capture_buffer_size = (uint32_t) floor (Config->get_audio_capture_buffer_seconds() * _session.frame_rate());
+                _session.adjust_capture_buffering ();
+        }
+}
+
 int
 Butler::start_thread()
 {