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channel config changes during ::configure_io() must be scoped to ensure they are complete before signals are sent

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Paul Davis 2017-07-25 12:57:07 -04:00
parent 9ce5ac9678
commit b8f16a16d0
1 changed files with 15 additions and 10 deletions
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25
libs/ardour/disk_io.cc
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@ -147,18 +147,23 @@ DiskIOProcessor::configure_io (ChanCount in, ChanCount out)
{ {
DEBUG_TRACE (DEBUG::DiskIO, string_compose ("Configuring %1 for in:%2 out:%3\n", name(), in, out)); DEBUG_TRACE (DEBUG::DiskIO, string_compose ("Configuring %1 for in:%2 out:%3\n", name(), in, out));
RCUWriter<ChannelList> writer (channels);
boost::shared_ptr<ChannelList> c = writer.get_copy();
uint32_t n_audio = in.n_audio();
bool changed = false; bool changed = false;
if (n_audio > c->size()) { {
add_channel_to (c, n_audio - c->size()); RCUWriter<ChannelList> writer (channels);
changed = true; boost::shared_ptr<ChannelList> c = writer.get_copy();
} else if (n_audio < c->size()) {
remove_channel_from (c, c->size() - n_audio); uint32_t n_audio = in.n_audio();
changed = true;
if (n_audio > c->size()) {
add_channel_to (c, n_audio - c->size());
changed = true;
} else if (n_audio < c->size()) {
remove_channel_from (c, c->size() - n_audio);
changed = true;
}
/* writer leaves scope, actual channel list is updated */
} }
if (in.n_midi() > 0 && !_midi_buf) { if (in.n_midi() > 0 && !_midi_buf) {