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Propagate Latency to backend/system ports

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Set accumulated capture-latency for physical-outputs
and accumulated playback-latency for physical-inputs
after Ardour is done setting all non-physical port latencies.

This will be needed for latency-compensation of the complete graph.
This commit is contained in:
Robin Gareus 2017-09-22 15:28:00 +02:00
parent 25f45022db
commit ab3889fff8
6 changed files with 175 additions and 36 deletions
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51
libs/backends/coreaudio/coreaudio_backend.cc
View file

@ -1162,6 +1162,24 @@ CoreAudioBackend::register_system_audio_ports()
return 0;
}
void
CoreAudioBackend::update_system_port_latecies ()
{
for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
(*it)->update_connected_latency (true);
}
for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
(*it)->update_connected_latency (false);
}
for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
(*it)->update_connected_latency (true);
}
for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
(*it)->update_connected_latency (false);
}
}
void
CoreAudioBackend::coremidi_rediscover()
{
@ -1644,6 +1662,7 @@ CoreAudioBackend::pre_process ()
manager.graph_order_callback();
}
if (connections_changed || ports_changed) {
update_system_port_latecies ();
engine.latency_callback(false);
engine.latency_callback(true);
}
@ -2081,7 +2100,6 @@ void CoreBackendPort::_disconnect (CoreBackendPort *port, bool callback)
}
}
void CoreBackendPort::disconnect_all ()
{
while (!_connections.empty ()) {
@ -2108,6 +2126,37 @@ bool CoreBackendPort::is_physically_connected () const
return false;
}
void
CoreBackendPort::set_latency_range (const LatencyRange &latency_range, bool for_playback)
{
if (for_playback) {
_playback_latency_range = latency_range;
} else {
_capture_latency_range = latency_range;
}
for (std::set<CoreBackendPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
if ((*it)->is_physical ()) {
(*it)->update_connected_latency (is_input ());
}
}
}
void
CoreBackendPort::update_connected_latency (bool for_playback)
{
LatencyRange lr;
lr.min = lr.max = 0;
const std::set<CoreBackendPort *>& cp = get_connections ();
for (std::set<CoreBackendPort*>::const_iterator it = cp.begin (); it != cp.end (); ++it) {
LatencyRange l;
l = (*it)->latency_range (for_playback);
lr.min = std::max (lr.min, l.min);
lr.max = std::max (lr.max, l.max);
}
set_latency_range (lr, for_playback);
}
/******************************************************************************/
CoreAudioPort::CoreAudioPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)