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PortAudio: implement MIDI device config

This commit is contained in:
Robin Gareus 2023-06-18 02:35:03 +02:00
parent 2d5ac04ae1
commit 00b2f5696c
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 59 additions and 22 deletions
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79
libs/backends/portaudio/portaudio_backend.cc
View File

@ -506,11 +506,7 @@ PortAudioBackend::enumerate_midi_devices () const
++i) {
midi_device_status.push_back(DeviceStatus((*i)->device_name, true));
}
#if 0
return midi_device_status;
#else
return std::vector<AudioBackend::DeviceStatus> ();
#endif
}
MidiDeviceInfo*
@ -536,10 +532,38 @@ int
PortAudioBackend::set_midi_device_enabled (std::string const device, bool enable)
{
MidiDeviceInfo* nfo = midi_device_info(device);
if (!nfo) return -1;
nfo->enable = enable;
// TODO add/remove ports
//update_systemic_midi_latencies ();
if (!nfo) {
return -1;
}
const bool was_enabled = nfo->enable;
nfo->enable = enable;
if (_run && was_enabled != enable) {
if (enable) {
/* add ports for the given device */
register_system_midi_ports (device);
} else {
/* remove all ports for the given device */
for (std::vector<BackendPortPtr>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) {
if ((*it)->hw_port_name () != device) {
++it;
continue;
}
unregister_port (*it);
it = _system_midi_out.erase (it);
}
for (std::vector<BackendPortPtr>::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) {
if ((*it)->hw_port_name () != device) {
++it;
continue;
}
unregister_port (*it);
it = _system_midi_in.erase (it);
}
}
update_systemic_midi_latencies ();
}
return 0;
}
@ -1243,7 +1267,7 @@ PortAudioBackend::register_system_audio_ports()
}
int
PortAudioBackend::register_system_midi_ports()
PortAudioBackend::register_system_midi_ports (std::string const& device)
{
if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
@ -1257,6 +1281,16 @@ PortAudioBackend::register_system_midi_ports()
for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
i != inputs.end ();
++i) {
if (!device.empty () && device != (*i)->name()) {
continue;
}
MidiDeviceInfo* info = _midiio->get_device_info((*i)->name());
if (!info || !info->enable) {
continue;
}
std::string port_name = "system:midi_capture_" + (*i)->name();
PortPtr p = add_port (port_name, DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
@ -1264,15 +1298,12 @@ PortAudioBackend::register_system_midi_ports()
return -1;
}
MidiDeviceInfo* info = _midiio->get_device_info((*i)->name());
lr.min = lr.max = 0;
if (info) { // assert?
lr.min = lr.max = (_measure_latency ? 0 : info->systemic_input_latency);
}
lr.min = lr.max = (_measure_latency ? 0 : info->systemic_input_latency);
set_latency_range (p, false, lr);
std::shared_ptr<PortMidiPort> midi_port = std::dynamic_pointer_cast<PortMidiPort>(p);
midi_port->set_hw_port_name ((*i)->name());
midi_clear (midi_port->get_buffer(0));
_system_midi_in.push_back (midi_port);
DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
}
@ -1282,6 +1313,15 @@ PortAudioBackend::register_system_midi_ports()
for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
i != outputs.end ();
++i) {
if (!device.empty () && device != (*i)->name()) {
continue;
}
MidiDeviceInfo* info = _midiio->get_device_info((*i)->name());
if (!info || !info->enable) {
continue;
}
std::string port_name = "system:midi_playback_" + (*i)->name();
PortPtr p = add_port (port_name, DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
@ -1289,16 +1329,13 @@ PortAudioBackend::register_system_midi_ports()
return -1;
}
MidiDeviceInfo* info = _midiio->get_device_info((*i)->name());
lr.min = lr.max = 0;
if (info) { // assert?
lr.min = lr.max = (_measure_latency ? 0 : info->systemic_output_latency);
}
lr.min = lr.max = (_measure_latency ? 0 : info->systemic_output_latency);
set_latency_range (p, false, lr);
std::shared_ptr<PortMidiPort> midi_port = std::dynamic_pointer_cast<PortMidiPort>(p);
midi_port->set_n_periods(2);
midi_port->set_hw_port_name ((*i)->name());
midi_clear (midi_port->get_buffer(0));
_system_midi_out.push_back (midi_port);
DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
}
@ -1309,7 +1346,7 @@ void
PortAudioBackend::update_systemic_midi_latencies ()
{
for (std::vector<BackendPortPtr>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
MidiDeviceInfo* info = _midiio->get_device_info((*it)->name().substr(21)); // "system:midi_playback_"
MidiDeviceInfo* info = _midiio->get_device_info((*it)->hw_port_name());
if (!info) {
continue;
}
@ -1319,7 +1356,7 @@ PortAudioBackend::update_systemic_midi_latencies ()
}
for (std::vector<BackendPortPtr>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
MidiDeviceInfo* info = _midiio->get_device_info((*it)->name().substr(20)); // "system:midi_capture_"
MidiDeviceInfo* info = _midiio->get_device_info((*it)->hw_port_name());
if (!info) {
continue;
}

2
libs/backends/portaudio/portaudio_backend.h
View File

@ -369,7 +369,7 @@ class PortAudioBackend : public AudioBackend, public PortEngineSharedImpl {
BackendPort* port_factory (std::string const & name, ARDOUR::DataType dt, ARDOUR::PortFlags flags);
int register_system_audio_ports ();
int register_system_midi_ports ();
int register_system_midi_ports (std::string const& device = "");
void update_systemic_midi_latencies ();