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MTC slave - fix jumps on initialization

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Do not re-position transport before first full frame has arrived.

git-svn-id: svn://localhost/ardour2/branches/3.0@13317 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Robin Gareus 2012-10-22 17:34:15 +00:00
parent a64a79b72c
commit 948fd683cd
1 changed files with 3 additions and 1 deletions
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4
libs/ardour/mtc_slave.cc
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@ -243,6 +243,7 @@ MTC_Slave::update_mtc_qtr (Parser& /*p*/, int which_qtr, framepos_t now)
mtc_frame += qtr * transport_direction;
DEBUG_TRACE (DEBUG::MTC, string_compose ("qtr frame %1 at %2 -> mtc_frame: %3\n", which_qtr, now, mtc_frame));
framepos_t ts = 0;
double mtc_speed = 0;
if (first_mtc_timestamp != 0) {
@ -253,12 +254,13 @@ MTC_Slave::update_mtc_qtr (Parser& /*p*/, int which_qtr, framepos_t now)
e2 += c * e;
mtc_speed = (t1 - t0) / qtr_d;
ts = now;
DEBUG_TRACE (DEBUG::MTC, string_compose ("qtr frame DLL t0:%1 t1:%2 err:%3 spd:%4 ddt:%5\n", t0, t1, e, mtc_speed, e2 - qtr_d));
}
current.guard1++;
current.position = mtc_frame;
current.timestamp = now;
current.timestamp = ts;
current.speed = mtc_speed;
current.guard2++;