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Don't interpolate&smooth playhead pos during export.

This commit is contained in:
Robin Gareus 2017-06-29 18:40:51 +02:00
parent 496ac30c41
commit 285ec18aa5
1 changed files with 9 additions and 0 deletions
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9
gtk2_ardour/editor.cc
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@ -5819,7 +5819,15 @@ Editor::super_rapid_screen_update ()
const int64_t now = g_get_monotonic_time ();
double err = 0;
if (_session->exporting ()) {
/* freewheel/export may be faster or slower than transport_speed() / SR.
* Also exporting multiple ranges locates/jumps without a _pending_locate_request.
*/
_last_update_time = 0;
}
if (_last_update_time > 0) {
/* interpolate and smoothen playhead position */
const double ds = (now - _last_update_time) * _session->transport_speed() * _session->nominal_frame_rate () * 1e-6;
framepos_t guess = playhead_cursor->current_frame () + rint (ds);
err = frame - guess;
@ -5841,6 +5849,7 @@ Editor::super_rapid_screen_update ()
if (err > 8192 || latent_locate) {
// in case of x-runs or freewheeling
_last_update_time = 0;
frame = _session->audible_frame ();
} else {
_last_update_time = now;
}