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Fix waveform update when channel-count changes 

7434478a35 introduced a race, IOchange triggers updating the
GUI and re-configuring processors. The latter needs to complete
first, otherwise Track::n_channels() returns the previous
channel count.
This commit is contained in:
Robin Gareus 2020-04-12 13:45:45 +02:00
parent 43d52fe41a
commit 134b2162ba
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 16 additions and 9 deletions
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24
gtk2_ardour/route_time_axis.cc
View File

@ -321,6 +321,8 @@ RouteTimeAxisView::set_route (boost::shared_ptr<Route> rt)
track()->FreezeChange.connect (*this, invalidator (*this), boost::bind (&RouteTimeAxisView::map_frozen, this), gui_context());
track()->SpeedChanged.connect (*this, invalidator (*this), boost::bind (&RouteTimeAxisView::speed_changed, this), gui_context());
track()->ChanCountChanged.connect (*this, invalidator (*this), boost::bind (&RouteTimeAxisView::chan_count_changed, this), gui_context());
/* pick up the correct freeze state */
map_frozen ();
@ -2404,15 +2406,19 @@ RouteTimeAxisView::io_changed (IOChange /*change*/, void */*src*/)
{
reset_meter ();
if (_route && !no_redraw) {
AudioStreamView* asv = dynamic_cast<AudioStreamView*>(_view);
if (asv) {
/* this needs to happen with the disk-reader's I/O changed,
* however there is no dedicated signal for this, and in almost
* call cases it follows I/O changes.
* This is similar to ARDOUR_UI::cleanup_peakfiles, and
* re-loads wave-form displays. */
asv->reload_waves ();
}
request_redraw ();
}
}
void
RouteTimeAxisView::chan_count_changed ()
{
AudioStreamView* asv = dynamic_cast<AudioStreamView*>(_view);
if (_route && !no_redraw && asv) {
/* This is similar to ARDOUR_UI::cleanup_peakfiles, and
* re-loads wave-form displays. */
asv->reload_waves ();
reset_meter ();
request_redraw ();
}
}

1
gtk2_ardour/route_time_axis.h
View File

@ -145,6 +145,7 @@ public:
void reset_meter ();
void clear_meter ();
void io_changed (ARDOUR::IOChange, void *);
void chan_count_changed ();
void meter_changed ();
void effective_gain_display () { gm.effective_gain_display(); }