1 files changed, 23 insertions, 0 deletions
diff --git a/libs/ardour/smf_source.cc b/libs/ardour/smf_source.cc
index 10cf7ab335..86e2e8a9aa 100644
--- a/libs/ardour/smf_source.cc
+++ b/libs/ardour/smf_source.cc
@@ -103,6 +103,29 @@ SMFSource::init (string pathstr, bool must_exist)
 	return 0;
 }
 
+int
+SMFSource::update_header (jack_nframes_t when, struct tm&, time_t)
+{
+	return 0;
+}
+
+int
+SMFSource::flush_header ()
+{
+	return 0;
+}
+
+jack_nframes_t
+SMFSource::read_unlocked (RawMidi* dst, jack_nframes_t start, jack_nframes_t cnt) const
+{
+	return 0;
+}
+
+jack_nframes_t
+SMFSource::write_unlocked (RawMidi* dst, jack_nframes_t cnt)
+{
+	return 0;
+}
 
 XMLNode&
 SMFSource::get_state ()