Fix MIDI Port-latencies

Only audio ports have additional latency due to I/O re-sampling
for vari-speed playback/capture.. MIDI ports are not affected.

diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc
index a8e80ad98cf5283ccc81a171673be92df7f53a39..5c1766f931b0c4a5a6b9bb2ce577c975e950844b 100644 (file)
--- a/libs/ardour/port.cc
+++ b/libs/ardour/port.cc
@@ -365,8 +365,10 @@ Port::set_public_latency_range (LatencyRange const& range, bool playback) const
                        r.min *= _speed_ratio;
                        r.max *= _speed_ratio;
 #endif
-                       r.min += (_resampler_quality - 1);
-                       r.max += (_resampler_quality - 1);
+                       if (type () == DataType::AUDIO) {
+                               r.min += (_resampler_quality - 1);
+                               r.max += (_resampler_quality - 1);
+                       }
                }
                port_engine.set_latency_range (_port_handle, playback, r);
        }
@@ -429,8 +431,10 @@ Port::public_latency_range (bool /*playback*/) const
                        r.min /= _speed_ratio;
                        r.max /= _speed_ratio;
 #endif
-                       r.min += (_resampler_quality - 1);
-                       r.max += (_resampler_quality - 1);
+                       if (type () == DataType::AUDIO) {
+                               r.min += (_resampler_quality - 1);
+                               r.max += (_resampler_quality - 1);
+                       }
                }
 
                DEBUG_TRACE (DEBUG::Latency, string_compose (
@@ -476,8 +480,10 @@ Port::get_connected_latency_range (LatencyRange& range, bool playback) const
                                                lr.min /= _speed_ratio;
                                                lr.max /= _speed_ratio;
 #endif
-                                               lr.min += (_resampler_quality - 1);
-                                               lr.max += (_resampler_quality - 1);
+                                               if (type () == DataType::AUDIO) {
+                                                       lr.min += (_resampler_quality - 1);
+                                                       lr.max += (_resampler_quality - 1);
+                                               }
                                        }
 
                                        DEBUG_TRACE (DEBUG::Latency, string_compose (