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Fix MTC latency compensation

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Offset the detected timecode instead of the detection time.
The latter is used by the DLL and later also used to calculate
delta times which lead to a constant offset.
This commit is contained in:
Robin Gareus
2020-05-11 02:04:40 +02:00
parent f69a395893
commit a6ffc6213b
1 changed files with 1 additions and 3 deletions
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4
libs/ardour/mtc_slave.cc
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@@ -157,8 +157,6 @@ MTC_TransportMaster::pre_process (MIDI::pframes_t nframes, samplepos_t now, boos
maybe_reset ();
now += mtc_slave_latency.max;
_midi_port->read_and_parse_entire_midi_buffer_with_no_speed_adjustment (nframes, parser, now);
if (session_pos) {
@@ -321,7 +319,7 @@ MTC_TransportMaster::update_mtc_qtr (Parser& p, int which_qtr, samplepos_t now)
mtc_speed = (t1 - t0) / qtr_d;
DEBUG_TRACE (DEBUG::MTC, string_compose ("qtr sample DLL t0:%1 t1:%2 err:%3 spd:%4 ddt:%5\n", t0, t1, e, mtc_speed, e2 - qtr_d));
current.update (mtc_frame, now, mtc_speed);
current.update (mtc_frame + mtc_slave_latency.max, now, mtc_speed);
last_inbound_frame = now;
}