static std::string s_instance_name;
size_t AlsaAudioBackend::_max_buffer_size = 8192;
std::vector<std::string> AlsaAudioBackend::_midi_options;
-std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_audio_device_status;
+std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_input_audio_device_status;
+std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_output_audio_device_status;
+std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_duplex_audio_device_status;
std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_midi_device_status;
+ALSADeviceInfo AlsaAudioBackend::_input_audio_device_info;
+ALSADeviceInfo AlsaAudioBackend::_output_audio_device_info;
+
AlsaAudioBackend::AlsaAudioBackend (AudioEngine& e, AudioBackendInfo& info)
: AudioBackend (e, info)
, _pcmi (0)
, _freewheeling (false)
, _measure_latency (false)
, _last_process_start (0)
- , _audio_device("")
+ , _input_audio_device("")
+ , _output_audio_device("")
, _midi_driver_option(_("None"))
, _device_reservation(0)
, _samplerate (48000)
{
_instance_name = s_instance_name;
pthread_mutex_init (&_port_callback_mutex, 0);
+ _input_audio_device_info.valid = false;
+ _output_audio_device_info.valid = false;
}
AlsaAudioBackend::~AlsaAudioBackend ()
std::vector<AudioBackend::DeviceStatus>
AlsaAudioBackend::enumerate_devices () const
{
- _audio_device_status.clear();
+ _duplex_audio_device_status.clear();
std::map<std::string, std::string> devices;
get_alsa_audio_device_names(devices);
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
- if (_audio_device == "") _audio_device = i->first;
- _audio_device_status.push_back (DeviceStatus (i->first, true));
+ if (_input_audio_device == "") _input_audio_device = i->first;
+ if (_output_audio_device == "") _output_audio_device = i->first;
+ _duplex_audio_device_status.push_back (DeviceStatus (i->first, true));
+ }
+ return _duplex_audio_device_status;
+}
+
+std::vector<AudioBackend::DeviceStatus>
+AlsaAudioBackend::enumerate_input_devices () const
+{
+ _input_audio_device_status.clear();
+ std::map<std::string, std::string> devices;
+ get_alsa_audio_device_names(devices, HalfDuplexIn);
+ _input_audio_device_status.push_back (DeviceStatus (_("None"), true));
+ for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
+ if (_input_audio_device == "") _input_audio_device = i->first;
+ _input_audio_device_status.push_back (DeviceStatus (i->first, true));
}
- return _audio_device_status;
+ return _input_audio_device_status;
+}
+
+std::vector<AudioBackend::DeviceStatus>
+AlsaAudioBackend::enumerate_output_devices () const
+{
+ _output_audio_device_status.clear();
+ std::map<std::string, std::string> devices;
+ get_alsa_audio_device_names(devices, HalfDuplexOut);
+ _output_audio_device_status.push_back (DeviceStatus (_("None"), true));
+ for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
+ if (_output_audio_device == "") _output_audio_device = i->first;
+ _output_audio_device_status.push_back (DeviceStatus (i->first, true));
+ }
+ return _output_audio_device_status;
}
void
}
std::vector<float>
-AlsaAudioBackend::available_sample_rates (const std::string&) const
+AlsaAudioBackend::available_sample_rates2 (const std::string& input_device, const std::string& output_device) const
{
std::vector<float> sr;
- sr.push_back (8000.0);
- sr.push_back (22050.0);
- sr.push_back (24000.0);
- sr.push_back (44100.0);
- sr.push_back (48000.0);
- sr.push_back (88200.0);
- sr.push_back (96000.0);
- sr.push_back (176400.0);
- sr.push_back (192000.0);
+ if (input_device == _("None") && output_device == _("None")) {
+ return sr;
+ }
+ else if (input_device == _("None")) {
+ sr = available_sample_rates (output_device);
+ }
+ else if (output_device == _("None")) {
+ sr = available_sample_rates (input_device);
+ } else {
+ std::vector<float> sr_in = available_sample_rates (input_device);
+ std::vector<float> sr_out = available_sample_rates (output_device);
+ std::set_intersection (sr_in.begin(), sr_in.end(), sr_out.begin(), sr_out.end(), std::back_inserter(sr));
+ }
+ return sr;
+}
+
+std::vector<float>
+AlsaAudioBackend::available_sample_rates (const std::string& device) const
+{
+ ALSADeviceInfo *nfo = NULL;
+ std::vector<float> sr;
+ if (device == _("None")) {
+ return sr;
+ }
+ if (device == _input_audio_device && _input_audio_device_info.valid) {
+ nfo = &_input_audio_device_info;
+ }
+ else if (device == _output_audio_device && _output_audio_device_info.valid) {
+ nfo = &_output_audio_device_info;
+ }
+
+ static const float avail_rates [] = { 8000, 22050.0, 24000.0, 44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0 };
+
+ for (size_t i = 0 ; i < sizeof(avail_rates) / sizeof(float); ++i) {
+ if (!nfo || (avail_rates[i] >= nfo->min_rate && avail_rates[i] <= nfo->max_rate)) {
+ sr.push_back (avail_rates[i]);
+ }
+ }
+
return sr;
}
std::vector<uint32_t>
-AlsaAudioBackend::available_buffer_sizes (const std::string&) const
+AlsaAudioBackend::available_buffer_sizes2 (const std::string& input_device, const std::string& output_device) const
{
std::vector<uint32_t> bs;
- bs.push_back (32);
- bs.push_back (64);
- bs.push_back (128);
- bs.push_back (256);
- bs.push_back (512);
- bs.push_back (1024);
- bs.push_back (2048);
- bs.push_back (4096);
- bs.push_back (8192);
+ if (input_device == _("None") && output_device == _("None")) {
+ return bs;
+ }
+ else if (input_device == _("None")) {
+ bs = available_buffer_sizes (output_device);
+ }
+ else if (output_device == _("None")) {
+ bs = available_buffer_sizes (input_device);
+ } else {
+ std::vector<uint32_t> bs_in = available_buffer_sizes (input_device);
+ std::vector<uint32_t> bs_out = available_buffer_sizes (output_device);
+ std::set_intersection (bs_in.begin(), bs_in.end(), bs_out.begin(), bs_out.end(), std::back_inserter(bs));
+ }
+ return bs;
+}
+
+std::vector<uint32_t>
+AlsaAudioBackend::available_buffer_sizes (const std::string& device) const
+{
+ ALSADeviceInfo *nfo = NULL;
+ std::vector<uint32_t> bs;
+ if (device == _("None")) {
+ return bs;
+ }
+ if (device == _input_audio_device && _input_audio_device_info.valid) {
+ nfo = &_input_audio_device_info;
+ }
+ else if (device == _output_audio_device && _output_audio_device_info.valid) {
+ nfo = &_output_audio_device_info;
+ }
+
+ static const unsigned long avail_sizes [] = { 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192 };
+
+ for (size_t i = 0 ; i < sizeof(avail_sizes) / sizeof(unsigned long); ++i) {
+ if (!nfo || (avail_sizes[i] >= nfo->min_size && avail_sizes[i] <= nfo->max_size)) {
+ bs.push_back (avail_sizes[i]);
+ }
+ }
return bs;
}
uint32_t
-AlsaAudioBackend::available_input_channel_count (const std::string&) const
+AlsaAudioBackend::available_input_channel_count (const std::string& device) const
{
- return 128; // TODO query current device
+ if (device == _("None")) {
+ return 0;
+ }
+ if (device == _input_audio_device && _input_audio_device_info.valid) {
+ return _input_audio_device_info.max_channels;
+ }
+ return 128;
}
uint32_t
-AlsaAudioBackend::available_output_channel_count (const std::string&) const
+AlsaAudioBackend::available_output_channel_count (const std::string& device) const
{
- return 128; // TODO query current device
+ if (device == _("None")) {
+ return 0;
+ }
+ if (device == _output_audio_device && _output_audio_device_info.valid) {
+ return _output_audio_device_info.max_channels;
+ }
+ return 128;
}
bool
}
int
-AlsaAudioBackend::set_device_name (const std::string& d)
+AlsaAudioBackend::set_input_device_name (const std::string& d)
{
- _audio_device = d;
+ if (_input_audio_device == d) {
+ return 0;
+ }
+ _input_audio_device = d;
+
+ if (d == _("None")) {
+ _input_audio_device_info.valid = false;
+ return 0;
+ }
+ std::string alsa_device;
+ std::map<std::string, std::string> devices;
+
+ get_alsa_audio_device_names(devices, HalfDuplexIn);
+ for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
+ if (i->first == d) {
+ alsa_device = i->second;
+ break;
+ }
+ }
+ if (alsa_device == "") {
+ _input_audio_device_info.valid = false;
+ return 1;
+ }
+ /* device will be busy once used, hence cache the parameters */
+ /* return */ get_alsa_device_parameters (alsa_device.c_str(), true, &_input_audio_device_info);
return 0;
}
+int
+AlsaAudioBackend::set_output_device_name (const std::string& d)
+{
+ if (_output_audio_device == d) {
+ return 0;
+ }
+
+ _output_audio_device = d;
+
+ if (d == _("None")) {
+ _output_audio_device_info.valid = false;
+ return 0;
+ }
+ std::string alsa_device;
+ std::map<std::string, std::string> devices;
+
+ get_alsa_audio_device_names(devices, HalfDuplexOut);
+ for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
+ if (i->first == d) {
+ alsa_device = i->second;
+ break;
+ }
+ }
+ if (alsa_device == "") {
+ _output_audio_device_info.valid = false;
+ return 1;
+ }
+ /* return */ get_alsa_device_parameters (alsa_device.c_str(), true, &_output_audio_device_info);
+ return 0;
+}
+
+int
+AlsaAudioBackend::set_device_name (const std::string& d)
+{
+ int rv = 0;
+ rv |= set_input_device_name (d);
+ rv |= set_output_device_name (d);
+ return rv;
+}
+
int
AlsaAudioBackend::set_sample_rate (float sr)
{
std::string
AlsaAudioBackend::device_name () const
{
- return _audio_device;
+ if (_input_audio_device != _("None")) {
+ return _input_audio_device;
+ }
+ if (_output_audio_device != _("None")) {
+ return _output_audio_device;
+ }
+ return "";
+}
+
+std::string
+AlsaAudioBackend::input_device_name () const
+{
+ return _input_audio_device;
+}
+
+std::string
+AlsaAudioBackend::output_device_name () const
+{
+ return _output_audio_device;
}
float
assert(_rmidi_out.size() == 0);
assert(_pcmi == 0);
+ int duplex = 0;
+ std::string audio_device;
std::string alsa_device;
std::map<std::string, std::string> devices;
- get_alsa_audio_device_names(devices);
+
+ if (_input_audio_device == _("None") && _output_audio_device == _("None")) {
+ PBD::error << _("AlsaAudioBackend: At least one of input or output device needs to be set.");
+ return -1;
+ }
+
+ if (_input_audio_device != _output_audio_device) {
+ if (_input_audio_device != _("None") && _output_audio_device != _("None")) {
+ PBD::error << _("AlsaAudioBackend: Cannot use two different devices.");
+ return -1;
+ }
+ if (_input_audio_device != _("None")) {
+ get_alsa_audio_device_names(devices, HalfDuplexIn);
+ audio_device = _input_audio_device;
+ duplex = 1;
+ } else {
+ get_alsa_audio_device_names(devices, HalfDuplexOut);
+ audio_device = _output_audio_device;
+ duplex = 2;
+ }
+ } else {
+ get_alsa_audio_device_names(devices);
+ audio_device = _input_audio_device;
+ duplex = 3;
+ }
+
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
- if (i->first == _audio_device) {
+ if (i->first == audio_device) {
alsa_device = i->second;
break;
}
}
+ if (alsa_device == "") {
+ PBD::error << _("AlsaAudioBackend: Cannot find configured device. Is it still connected?");
+ return -1;
+ }
acquire_device(alsa_device.c_str());
- _pcmi = new Alsa_pcmi (alsa_device.c_str(), alsa_device.c_str(), 0, _samplerate, _samples_per_period, _periods_per_cycle, 0);
+ _pcmi = new Alsa_pcmi (
+ (duplex & 2) ? alsa_device.c_str() : NULL,
+ (duplex & 1) ? alsa_device.c_str() : NULL,
+ 0, _samplerate, _samples_per_period, _periods_per_cycle, 0);
switch (_pcmi->state ()) {
case 0: /* OK */ break;
case -1: PBD::error << _("AlsaAudioBackend: failed to open device.") << endmsg; break;
float
AlsaAudioBackend::dsp_load () const
{
- return 100.f * _dsp_load;
+ return std::min(100.f, 100.f * _dsp_load);
}
size_t
}
for (size_t i = 0; i < _ports.size (); ++i) {
AlsaPort* port = _ports[i];
- if ((port->type () == type) && (port->flags () & flags)) {
+ if ((port->type () == type) && flags == (port->flags () & flags)) {
if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
port_names.push_back (port->name ());
++rv;
{
LatencyRange lr;
- const int a_ins = _n_inputs > 0 ? _n_inputs : 2;
- const int a_out = _n_outputs > 0 ? _n_outputs : 2;
+ const int a_ins = _n_inputs;
+ const int a_out = _n_outputs;
/* audio ports */
lr.min = lr.max = (_measure_latency ? 0 : _systemic_audio_input_latency);
_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;
+ const int64_t nominal_time = 1e6 * _samples_per_period / _samplerate;
manager.registration_callback();
manager.graph_order_callback();
/* calculate DSP load */
clock2 = g_get_monotonic_time();
const int64_t elapsed_time = clock2 - clock1;
- _dsp_load = elapsed_time / (float) nomial_time;
+ // low pass filter
+ const float load = elapsed_time / (float) nominal_time;
+ if (load > _dsp_load) {
+ _dsp_load = load;
+ } else {
+ const float a = .2 * _samples_per_period / _samplerate;
+ _dsp_load = _dsp_load + a * (load - _dsp_load) + 1e-12;
+ }
}
if (xrun && (_pcmi->capt_xrun() > 0 || _pcmi->play_xrun() > 0)) {
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