Demote message about empty MIDI tracks to info.

[ardour.git] / libs / ardour / delayline.cc

diff --git a/libs/ardour/delayline.cc b/libs/ardour/delayline.cc
index 550051f2d0acaad3cc01890608676fb21c5679a9..0bd779336665b68a969e7a25a51c6ff1c4ef2728 100644 (file)
--- a/libs/ardour/delayline.cc
+++ b/libs/ardour/delayline.cc
@@ -222,10 +222,12 @@ DelayLine::run (BufferSet& bufs, framepos_t /* start_frame */, framepos_t /* end
                                }
                        }
 
-                       // delay events in current-buffer, in place.
-                       for (MidiBuffer::iterator m = mb.begin(); m != mb.end(); ++m) {
-                               MidiBuffer::TimeType *t = m.timeptr();
-                               *t += _delay;
+                       if (_delay != 0) {
+                               // delay events in current-buffer, in place.
+                               for (MidiBuffer::iterator m = mb.begin(); m != mb.end(); ++m) {
+                                       MidiBuffer::TimeType *t = m.timeptr();
+                                       *t += _delay;
+                               }
                        }
 
                        // move events from dly-buffer into current-buffer until nsamples
@@ -239,16 +241,22 @@ DelayLine::run (BufferSet& bufs, framepos_t /* start_frame */, framepos_t /* end
                                m = dly->erase(m);
                        }
 
-                       // move events after nsamples from current-buffer into dly-buffer
-                       // and trim current-buffer after nsamples
-                       for (MidiBuffer::iterator m = mb.begin(); m != mb.end();) {
-                               const Evoral::MIDIEvent<MidiBuffer::TimeType> ev (*m, false);
-                               if (ev.time() < nsamples) {
-                                       ++m;
-                                       continue;
+                       /* For now, this is only relevant if there is there's a positive delay.
+                        * In the future this could also be used to delay 'too early' events
+                        * (ie '_global_port_buffer_offset + _port_buffer_offset' - midi_port.cc)
+                        */
+                       if (_delay != 0) {
+                               // move events after nsamples from current-buffer into dly-buffer
+                               // and trim current-buffer after nsamples
+                               for (MidiBuffer::iterator m = mb.begin(); m != mb.end();) {
+                                       const Evoral::MIDIEvent<MidiBuffer::TimeType> ev (*m, false);
+                                       if (ev.time() < nsamples) {
+                                               ++m;
+                                               continue;
+                                       }
+                                       dly->insert_event(ev);
+                                       m = mb.erase(m);
                                }
-                               dly->insert_event(ev);
-                               m = mb.erase(m);
                        }
                }
        }