, _run (false)
, _active (false)
, _freewheeling (false)
+ , _measure_latency (false)
, _audio_device("")
- , _midi_device("")
+ , _midi_driver_option(_("None"))
, _device_reservation(0)
, _samplerate (48000)
, _samples_per_period (1024)
, _periods_per_cycle (2)
- , _dsp_load (0)
, _n_inputs (0)
, _n_outputs (0)
, _systemic_audio_input_latency (0)
, _systemic_audio_output_latency (0)
- , _systemic_midi_input_latency (0)
- , _systemic_midi_output_latency (0)
+ , _dsp_load (0)
, _processed_samples (0)
, _port_change_flag (false)
{
AlsaAudioBackend::set_systemic_input_latency (uint32_t sl)
{
_systemic_audio_input_latency = sl;
- _systemic_midi_input_latency = sl;
return 0;
}
AlsaAudioBackend::set_systemic_output_latency (uint32_t sl)
{
_systemic_audio_output_latency = sl;
- _systemic_midi_output_latency = sl;
+ return 0;
+}
+
+int
+AlsaAudioBackend::set_systemic_midi_input_latency (std::string const device, uint32_t sl)
+{
+ struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
+ if (!nfo) return -1;
+ nfo->systemic_input_latency = sl;
+ return 0;
+}
+
+int
+AlsaAudioBackend::set_systemic_midi_output_latency (std::string const device, uint32_t sl)
+{
+ struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
+ if (!nfo) return -1;
+ nfo->systemic_output_latency = sl;
return 0;
}
return _systemic_audio_output_latency;
}
+uint32_t
+AlsaAudioBackend::systemic_midi_input_latency (std::string const device) const
+{
+ struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
+ if (!nfo) return 0;
+ return nfo->systemic_input_latency;
+}
+
+uint32_t
+AlsaAudioBackend::systemic_midi_output_latency (std::string const device) const
+{
+ struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
+ if (!nfo) return 0;
+ return nfo->systemic_output_latency;
+}
+
/* MIDI */
+struct AlsaAudioBackend::AlsaMidiDeviceInfo *
+AlsaAudioBackend::midi_device_info(std::string const name) const {
+ for (std::map<std::string, struct AlsaMidiDeviceInfo*>::const_iterator i = _midi_devices.begin (); i != _midi_devices.end(); ++i) {
+ if (i->first == name) {
+ return (i->second);
+ }
+ }
+
+ std::map<std::string, std::string> devices;
+ get_alsa_rawmidi_device_names(devices);
+ for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
+ if (i->first == name) {
+ _midi_devices[name] = new AlsaMidiDeviceInfo();
+ return _midi_devices[name];
+ }
+ }
+ return 0;
+}
+
std::vector<std::string>
AlsaAudioBackend::enumerate_midi_options () const
{
std::vector<std::string> m;
- m.push_back (_("-None-"));
+ m.push_back (_("None"));
+ m.push_back (_("ALSA raw devices"));
+ return m;
+}
+
+std::vector<AudioBackend::DeviceStatus>
+AlsaAudioBackend::enumerate_midi_devices () const
+{
+ std::vector<AudioBackend::DeviceStatus> s;
+ if (_midi_driver_option == _("None")) {
+ return s;
+ }
+
std::map<std::string, std::string> devices;
get_alsa_rawmidi_device_names(devices);
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
- m.push_back (i->first);
- }
- if (m.size() > 2) {
- m.push_back (_("-All-"));
+ s.push_back (DeviceStatus (i->first, true));
}
- return m;
+ return s;
}
int
AlsaAudioBackend::set_midi_option (const std::string& opt)
{
- _midi_device = opt;
+ if (opt != _("None") && opt != _("ALSA raw devices")) {
+ return -1;
+ }
+ _midi_driver_option = opt;
return 0;
}
std::string
AlsaAudioBackend::midi_option () const
{
- return _midi_device;
+ return _midi_driver_option;
+}
+
+int
+AlsaAudioBackend::set_midi_device_enabled (std::string const device, bool enable)
+{
+ struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
+ if (!nfo) return -1;
+ nfo->enabled = enable;
+ return 0;
+}
+
+bool
+AlsaAudioBackend::midi_device_enabled (std::string const device) const
+{
+ struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
+ if (!nfo) return false;
+ return nfo->enabled;
}
/* State Control */
int
AlsaAudioBackend::_start (bool for_latency_measurement)
{
+ if (!_active && _run) {
+ // recover from 'halted', reap threads
+ stop();
+ }
+
if (_active || _run) {
PBD::error << _("AlsaAudioBackend: already active.") << endmsg;
return -1;
PBD::warning << _("AlsaAudioBackend: sample rate does not match.") << endmsg;
}
- if (for_latency_measurement) {
- _systemic_audio_input_latency = 0;
- _systemic_audio_output_latency = 0;
- _systemic_midi_input_latency = 0;
- _systemic_midi_output_latency = 0;
- }
+ _measure_latency = for_latency_measurement;
register_system_midi_ports();
void
AlsaAudioBackend::update_latencies ()
{
+ // trigger latency callback in RT thread (locked graph)
+ port_connect_add_remove_callback();
}
/* PORTENGINE API */
const int a_out = _n_outputs > 0 ? _n_outputs : 2;
/* audio ports */
- lr.min = lr.max = _samples_per_period + _systemic_audio_input_latency;
+ lr.min = lr.max = _samples_per_period + _measure_latency ? 0 : _systemic_audio_input_latency;
for (int i = 1; i <= a_ins; ++i) {
char tmp[64];
snprintf(tmp, sizeof(tmp), "system:capture_%d", i);
_system_inputs.push_back(static_cast<AlsaPort*>(p));
}
- lr.min = lr.max = _samples_per_period + _systemic_audio_output_latency;
+ lr.min = lr.max = _samples_per_period + _measure_latency ? 0 : _systemic_audio_output_latency;
for (int i = 1; i <= a_out; ++i) {
char tmp[64];
snprintf(tmp, sizeof(tmp), "system:playback_%d", i);
int
AlsaAudioBackend::register_system_midi_ports()
{
- LatencyRange lr;
- std::vector<std::string> devices;
+ std::map<std::string, std::string> devices;
+ int midi_ins = 0;
+ int midi_outs = 0;
- if (_midi_device == _("-None-")) {
+ if (_midi_driver_option == _("None")) {
return 0;
}
- else if (_midi_device == _("-All-")) {
- std::map<std::string, std::string> devmap;
- get_alsa_rawmidi_device_names(devmap);
- for (std::map<std::string, std::string>::const_iterator i = devmap.begin (); i != devmap.end(); ++i) {
- devices.push_back (i->second);
- }
- } else {
- std::map<std::string, std::string> devmap;
- get_alsa_rawmidi_device_names(devmap);
- for (std::map<std::string, std::string>::const_iterator i = devmap.begin (); i != devmap.end(); ++i) {
- if (i->first == _midi_device) {
- devices.push_back (i->second);
- break;
- }
- }
- }
+ get_alsa_rawmidi_device_names(devices);
- for (std::vector<std::string>::const_iterator i = devices.begin (); i != devices.end (); ++i) {
+ for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
+ struct AlsaMidiDeviceInfo * nfo = midi_device_info(i->first);
+ if (!nfo) continue;
+ if (!nfo->enabled) continue;
- AlsaRawMidiOut *mout = new AlsaRawMidiOut (i->c_str());
+ AlsaRawMidiOut *mout = new AlsaRawMidiOut (i->second.c_str());
if (mout->state ()) {
PBD::warning << string_compose (
- _("AlsaRawMidiOut: failed to open midi device '%1'."), *i)
+ _("AlsaRawMidiOut: failed to open midi device '%1'."), i->second)
<< endmsg;
delete mout;
} else {
mout->sync_time (g_get_monotonic_time());
if (mout->start ()) {
PBD::warning << string_compose (
- _("AlsaRawMidiOut: failed to start midi device '%1'."), *i)
+ _("AlsaRawMidiOut: failed to start midi device '%1'."), i->second)
<< endmsg;
delete mout;
} else {
+ char tmp[64];
+ snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", ++midi_ins);
+ PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
+ if (!p) {
+ mout->stop();
+ delete mout;
+ }
+ LatencyRange lr;
+ lr.min = lr.max = _samples_per_period + nfo->systemic_output_latency;
+ set_latency_range (p, false, lr);
+ _system_midi_out.push_back(static_cast<AlsaPort*>(p));
_rmidi_out.push_back (mout);
}
}
- AlsaRawMidiIn *midin = new AlsaRawMidiIn (i->c_str());
+ AlsaRawMidiIn *midin = new AlsaRawMidiIn (i->second.c_str());
if (midin->state ()) {
PBD::warning << string_compose (
- _("AlsaRawMidiIn: failed to open midi device '%1'."), *i)
+ _("AlsaRawMidiIn: failed to open midi device '%1'."), i->second)
<< endmsg;
delete midin;
} else {
midin->sync_time (g_get_monotonic_time());
if (midin->start ()) {
PBD::warning << string_compose (
- _("AlsaRawMidiIn: failed to start midi device '%1'."), *i)
+ _("AlsaRawMidiIn: failed to start midi device '%1'."), i->second)
<< endmsg;
delete midin;
} else {
+ char tmp[64];
+ snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", ++midi_outs);
+ PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
+ if (!p) {
+ midin->stop();
+ delete midin;
+ continue;
+ }
+ LatencyRange lr;
+ lr.min = lr.max = _samples_per_period + nfo->systemic_input_latency;
+ set_latency_range (p, false, lr);
+ _system_midi_in.push_back(static_cast<AlsaPort*>(p));
_rmidi_in.push_back (midin);
}
}
}
-
- const int m_ins = _rmidi_in.size();
- const int m_out = _rmidi_out.size();
-
- lr.min = lr.max = _samples_per_period + _systemic_midi_input_latency;
- for (int i = 1; i <= m_ins; ++i) {
- char tmp[64];
- snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", i);
- PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
- if (!p) return -1;
- set_latency_range (p, false, lr);
- _system_midi_in.push_back(static_cast<AlsaPort*>(p));
- }
-
- lr.min = lr.max = _samples_per_period + _systemic_midi_output_latency;
- for (int i = 1; i <= m_out; ++i) {
- char tmp[64];
- snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", i);
- PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
- if (!p) return -1;
- set_latency_range (p, true, lr);
- _system_midi_out.push_back(static_cast<AlsaPort*>(p));
- }
-
return 0;
}
clock1 = g_get_monotonic_time();
_pcmi->pcm_start ();
int no_proc_errors = 0;
+ const int bailout = 2 * _samplerate / _samples_per_period;
+ const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
manager.registration_callback();
manager.graph_order_callback();
++no_proc_errors;
xrun = true;
}
- if (_pcmi->state () < 0 || no_proc_errors > 50) {
+ if (_pcmi->state () < 0 || no_proc_errors > bailout) {
PBD::error << _("AlsaAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
break;
}
/* calculate DSP load */
clock2 = g_get_monotonic_time();
const int64_t elapsed_time = clock2 - clock1;
- const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
_dsp_load = elapsed_time / (float) nomial_time;
}
if (connections_changed) {
manager.graph_order_callback();
}
+ if (connections_changed || ports_changed) {
+ engine.latency_callback(false);
+ engine.latency_callback(true);
+ }
}
_pcmi->pcm_stop ();
static bool already_configured ();
static ARDOUR::AudioBackendInfo _descriptor = {
- "Alsa",
+ "ALSA",
instantiate,
deinstantiate,
backend_factory,
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