X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fbackends%2Falsa%2Falsa_audiobackend.cc;h=df5a7706ea1d386ee8cece52c29621358ba36092;hb=9840a115373247eaac804e87f63346c175c99c70;hp=5afa637bbad8092da737f33f448e549d7350a154;hpb=cd12698b9caff8a7fc0006f409cbf317e67fec82;p=ardour.git diff --git a/libs/backends/alsa/alsa_audiobackend.cc b/libs/backends/alsa/alsa_audiobackend.cc index 5afa637bba..df5a7706ea 100644 --- a/libs/backends/alsa/alsa_audiobackend.cc +++ b/libs/backends/alsa/alsa_audiobackend.cc @@ -39,18 +39,26 @@ using namespace ARDOUR; static std::string s_instance_name; size_t AlsaAudioBackend::_max_buffer_size = 8192; std::vector AlsaAudioBackend::_midi_options; -std::vector AlsaAudioBackend::_audio_device_status; +std::vector AlsaAudioBackend::_input_audio_device_status; +std::vector AlsaAudioBackend::_output_audio_device_status; +std::vector AlsaAudioBackend::_duplex_audio_device_status; std::vector 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) , _run (false) , _active (false) + , _freewheel (false) , _freewheeling (false) , _measure_latency (false) - , _audio_device("") - , _midi_driver_option(_("None")) + , _last_process_start (0) + , _input_audio_device("") + , _output_audio_device("") + , _midi_driver_option(get_standard_device_name(DeviceNone)) , _device_reservation(0) , _samplerate (48000) , _samples_per_period (1024) @@ -61,10 +69,14 @@ AlsaAudioBackend::AlsaAudioBackend (AudioEngine& e, AudioBackendInfo& info) , _systemic_audio_output_latency (0) , _dsp_load (0) , _processed_samples (0) + , _midi_ins (0) + , _midi_outs (0) , _port_change_flag (false) { _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 () @@ -89,13 +101,43 @@ AlsaAudioBackend::is_realtime () const std::vector AlsaAudioBackend::enumerate_devices () const { - _audio_device_status.clear(); + _duplex_audio_device_status.clear(); std::map devices; get_alsa_audio_device_names(devices); for (std::map::const_iterator i = devices.begin (); i != devices.end(); ++i) { - _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 +AlsaAudioBackend::enumerate_input_devices () const +{ + _input_audio_device_status.clear(); + std::map devices; + get_alsa_audio_device_names(devices, HalfDuplexIn); + _input_audio_device_status.push_back (DeviceStatus (get_standard_device_name(DeviceNone), true)); + for (std::map::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 +AlsaAudioBackend::enumerate_output_devices () const +{ + _output_audio_device_status.clear(); + std::map devices; + get_alsa_audio_device_names(devices, HalfDuplexOut); + _output_audio_device_status.push_back (DeviceStatus (get_standard_device_name(DeviceNone), true)); + for (std::map::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 @@ -176,47 +218,127 @@ AlsaAudioBackend::acquire_device(const char* device_name) } std::vector -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 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 == get_standard_device_name(DeviceNone) && output_device == get_standard_device_name(DeviceNone)) { + return sr; + } + else if (input_device == get_standard_device_name(DeviceNone)) { + sr = available_sample_rates (output_device); + } + else if (output_device == get_standard_device_name(DeviceNone)) { + sr = available_sample_rates (input_device); + } else { + std::vector sr_in = available_sample_rates (input_device); + std::vector 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 +AlsaAudioBackend::available_sample_rates (const std::string& device) const +{ + ALSADeviceInfo *nfo = NULL; + std::vector sr; + if (device == get_standard_device_name(DeviceNone)) { + 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 -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 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 == get_standard_device_name(DeviceNone) && output_device == get_standard_device_name(DeviceNone)) { + return bs; + } + else if (input_device == get_standard_device_name(DeviceNone)) { + bs = available_buffer_sizes (output_device); + } + else if (output_device == get_standard_device_name(DeviceNone)) { + bs = available_buffer_sizes (input_device); + } else { + std::vector bs_in = available_buffer_sizes (input_device); + std::vector 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 +AlsaAudioBackend::available_buffer_sizes (const std::string& device) const +{ + ALSADeviceInfo *nfo = NULL; + std::vector bs; + if (device == get_standard_device_name(DeviceNone)) { + 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 == get_standard_device_name(DeviceNone)) { + 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 == get_standard_device_name(DeviceNone)) { + return 0; + } + if (device == _output_audio_device && _output_audio_device_info.valid) { + return _output_audio_device_info.max_channels; + } + return 128; +} + +std::vector +AlsaAudioBackend::available_period_sizes (const std::string& driver) const +{ + std::vector ps; + ps.push_back (2); + ps.push_back (3); + return ps; } bool @@ -228,16 +350,80 @@ AlsaAudioBackend::can_change_sample_rate_when_running () const bool AlsaAudioBackend::can_change_buffer_size_when_running () const { - return false; + return false; // why not? :) } 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 == get_standard_device_name(DeviceNone)) { + _input_audio_device_info.valid = false; + return 0; + } + std::string alsa_device; + std::map devices; + + get_alsa_audio_device_names(devices, HalfDuplexIn); + for (std::map::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 == get_standard_device_name(DeviceNone)) { + _output_audio_device_info.valid = false; + return 0; + } + std::string alsa_device; + std::map devices; + + get_alsa_audio_device_names(devices, HalfDuplexOut); + for (std::map::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) { @@ -247,12 +433,28 @@ AlsaAudioBackend::set_sample_rate (float sr) return 0; } +int +AlsaAudioBackend::set_peridod_size (uint32_t n) +{ + if (n == 0 || n > 3) { + return -1; + } + if (_run) { + return -1; + } + _periods_per_cycle = n; + return 0; +} + int AlsaAudioBackend::set_buffer_size (uint32_t bs) { if (bs <= 0 || bs >= _max_buffer_size) { return -1; } + if (_run) { + return -1; + } _samples_per_period = bs; engine.buffer_size_change (bs); return 0; @@ -283,6 +485,9 @@ int AlsaAudioBackend::set_systemic_input_latency (uint32_t sl) { _systemic_audio_input_latency = sl; + if (_run) { + update_systemic_audio_latencies(); + } return 0; } @@ -290,6 +495,9 @@ int AlsaAudioBackend::set_systemic_output_latency (uint32_t sl) { _systemic_audio_output_latency = sl; + if (_run) { + update_systemic_audio_latencies(); + } return 0; } @@ -299,6 +507,9 @@ AlsaAudioBackend::set_systemic_midi_input_latency (std::string const device, uin struct AlsaMidiDeviceInfo * nfo = midi_device_info(device); if (!nfo) return -1; nfo->systemic_input_latency = sl; + if (_run && nfo->enabled) { + update_systemic_midi_latencies (); + } return 0; } @@ -308,14 +519,80 @@ AlsaAudioBackend::set_systemic_midi_output_latency (std::string const device, ui struct AlsaMidiDeviceInfo * nfo = midi_device_info(device); if (!nfo) return -1; nfo->systemic_output_latency = sl; + if (_run && nfo->enabled) { + update_systemic_midi_latencies (); + } return 0; } +void +AlsaAudioBackend::update_systemic_audio_latencies () +{ + const uint32_t lcpp = (_periods_per_cycle - 2) * _samples_per_period; + LatencyRange lr; + + lr.min = lr.max = lcpp + (_measure_latency ? 0 : _systemic_audio_input_latency); + for (std::vector::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) { + set_latency_range (*it, true, lr); + } + + lr.min = lr.max = (_measure_latency ? 0 : _systemic_audio_output_latency); + for (std::vector::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) { + set_latency_range (*it, false, lr); + } + update_latencies (); +} + +void +AlsaAudioBackend::update_systemic_midi_latencies () +{ + uint32_t i = 0; + for (std::vector::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) { + assert (_rmidi_out.size() > i); + AlsaMidiOut *rm = _rmidi_out.at(i); + struct AlsaMidiDeviceInfo * nfo = midi_device_info (rm->name()); + assert (nfo); + LatencyRange lr; + lr.min = lr.max = (_measure_latency ? 0 : nfo->systemic_output_latency); + set_latency_range (*it, false, lr); + } + + i = 0; + for (std::vector::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) { + assert (_rmidi_in.size() > i); + AlsaMidiIO *rm = _rmidi_in.at(i); + struct AlsaMidiDeviceInfo * nfo = midi_device_info (rm->name()); + assert (nfo); + LatencyRange lr; + lr.min = lr.max = (_measure_latency ? 0 : nfo->systemic_input_latency); + set_latency_range (*it, true, lr); + } + update_latencies (); +} + /* Retrieving parameters */ std::string AlsaAudioBackend::device_name () const { - return _audio_device; + if (_input_audio_device != get_standard_device_name(DeviceNone)) { + return _input_audio_device; + } + if (_output_audio_device != get_standard_device_name(DeviceNone)) { + 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 @@ -330,6 +607,12 @@ AlsaAudioBackend::buffer_size () const return _samples_per_period; } +uint32_t +AlsaAudioBackend::period_size () const +{ + return _periods_per_cycle; +} + bool AlsaAudioBackend::interleaved () const { @@ -385,7 +668,7 @@ AlsaAudioBackend::midi_device_info(std::string const name) const { } } - assert(_midi_driver_option != _("None")); + assert(_midi_driver_option != get_standard_device_name(DeviceNone)); std::map devices; if (_midi_driver_option == _("ALSA raw devices")) { @@ -407,9 +690,9 @@ std::vector AlsaAudioBackend::enumerate_midi_options () const { if (_midi_options.empty()) { - _midi_options.push_back (_("None")); _midi_options.push_back (_("ALSA raw devices")); _midi_options.push_back (_("ALSA sequencer")); + _midi_options.push_back (get_standard_device_name(DeviceNone)); } return _midi_options; } @@ -436,7 +719,10 @@ AlsaAudioBackend::enumerate_midi_devices () const int AlsaAudioBackend::set_midi_option (const std::string& opt) { - if (opt != _("None") && opt != _("ALSA raw devices") && opt != _("ALSA sequencer")) { + if (opt != get_standard_device_name(DeviceNone) && opt != _("ALSA raw devices") && opt != _("ALSA sequencer")) { + return -1; + } + if (_run && _midi_driver_option != opt) { return -1; } _midi_driver_option = opt; @@ -454,7 +740,41 @@ AlsaAudioBackend::set_midi_device_enabled (std::string const device, bool enable { struct AlsaMidiDeviceInfo * nfo = midi_device_info(device); if (!nfo) return -1; + const bool prev_enabled = nfo->enabled; nfo->enabled = enable; + + if (_run && prev_enabled != enable) { + if (enable) { + // add ports for the given device + register_system_midi_ports(device); + } else { + // remove all ports provided by the given device + uint32_t i = 0; + for (std::vector::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) { + assert (_rmidi_out.size() > i); + AlsaMidiOut *rm = _rmidi_out.at(i); + if (rm->name () != device) { ++it; ++i; continue; } + it = _system_midi_out.erase (it); + unregister_port (*it); + rm->stop(); + _rmidi_out.erase (_rmidi_out.begin() + i); + delete rm; + } + + i = 0; + for (std::vector::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) { + assert (_rmidi_in.size() > i); + AlsaMidiIn *rm = _rmidi_in.at(i); + if (rm->name () != device) { ++it; ++i; continue; } + it = _system_midi_in.erase (it); + unregister_port (*it); + rm->stop(); + _rmidi_in.erase (_rmidi_in.begin() + i); + delete rm; + } + } + update_systemic_midi_latencies (); + } return 0; } @@ -486,7 +806,7 @@ AlsaAudioBackend::_start (bool for_latency_measurement) if (_active || _run) { PBD::error << _("AlsaAudioBackend: already active.") << endmsg; - return -1; + return BackendReinitializationError; } if (_ports.size()) { @@ -498,38 +818,109 @@ AlsaAudioBackend::_start (bool for_latency_measurement) _ports.clear(); } + /* reset internal state */ + _dsp_load = 0; + _freewheeling = false; + _freewheel = false; + _last_process_start = 0; + release_device(); assert(_rmidi_in.size() == 0); assert(_rmidi_out.size() == 0); assert(_pcmi == 0); + int duplex = 0; + std::string audio_device; std::string alsa_device; std::map devices; - get_alsa_audio_device_names(devices); + + if (_input_audio_device == get_standard_device_name(DeviceNone) && _output_audio_device == get_standard_device_name(DeviceNone)) { + PBD::error << _("AlsaAudioBackend: At least one of input or output device needs to be set."); + return AudioDeviceInvalidError; + } + + if (_input_audio_device != _output_audio_device) { + if (_input_audio_device != get_standard_device_name(DeviceNone) && _output_audio_device != get_standard_device_name(DeviceNone)) { + PBD::error << _("AlsaAudioBackend: Cannot use two different devices."); + return AudioDeviceInvalidError; + } + if (_input_audio_device != get_standard_device_name(DeviceNone)) { + 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::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 AudioDeviceNotAvailableError; + } 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); - switch (_pcmi->state ()) { - case 0: /* OK */ break; - case -1: PBD::error << _("AlsaAudioBackend: failed to open device.") << endmsg; break; - case -2: PBD::error << _("AlsaAudioBackend: failed to allocate parameters.") << endmsg; break; - case -3: PBD::error << _("AlsaAudioBackend: cannot set requested sample rate.") << endmsg; break; - case -4: PBD::error << _("AlsaAudioBackend: cannot set requested period size.") << endmsg; break; - case -5: PBD::error << _("AlsaAudioBackend: cannot set requested number of periods.") << endmsg; break; - case -6: PBD::error << _("AlsaAudioBackend: unsupported sample format.") << endmsg; break; - default: PBD::error << _("AlsaAudioBackend: initialization failed.") << endmsg; break; + _pcmi = new Alsa_pcmi ( + (duplex & 2) ? alsa_device.c_str() : NULL, + (duplex & 1) ? alsa_device.c_str() : NULL, + /* ctrl name */ 0, + _samplerate, _samples_per_period, + _periods_per_cycle, /* _periods_per_cycle */ 2, + /* debug */ 0); + + AudioBackend::ErrorCode error_code = NoError; + switch (_pcmi->state()) { + case 0: /* OK */ + break; + case -1: + PBD::error << _("AlsaAudioBackend: failed to open device.") << endmsg; + error_code = AudioDeviceOpenError; + break; + case -2: + PBD::error << _("AlsaAudioBackend: failed to allocate parameters.") << endmsg; + error_code = AudioDeviceOpenError; + break; + case -3: + PBD::error << _("AlsaAudioBackend: cannot set requested sample rate.") + << endmsg; + error_code = SampleRateNotSupportedError; + break; + case -4: + PBD::error << _("AlsaAudioBackend: cannot set requested period size.") + << endmsg; + error_code = PeriodSizeNotSupportedError; + break; + case -5: + PBD::error << _("AlsaAudioBackend: cannot set requested number of periods.") + << endmsg; + error_code = PeriodCountNotSupportedError; + break; + case -6: + PBD::error << _("AlsaAudioBackend: unsupported sample format.") << endmsg; + error_code = SampleFormatNotSupportedError; + break; + default: + PBD::error << _("AlsaAudioBackend: initialization failed.") << endmsg; + error_code = AudioDeviceOpenError; + break; } + if (_pcmi->state ()) { delete _pcmi; _pcmi = 0; release_device(); - return -1; + return error_code; } #ifndef NDEBUG @@ -567,13 +958,14 @@ AlsaAudioBackend::_start (bool for_latency_measurement) _measure_latency = for_latency_measurement; + _midi_ins = _midi_outs = 0; register_system_midi_ports(); if (register_system_audio_ports()) { PBD::error << _("AlsaAudioBackend: failed to register system ports.") << endmsg; delete _pcmi; _pcmi = 0; release_device(); - return -1; + return PortRegistrationError; } engine.sample_rate_change (_samplerate); @@ -583,7 +975,7 @@ AlsaAudioBackend::_start (bool for_latency_measurement) PBD::error << _("AlsaAudioBackend: Could not re-establish ports.") << endmsg; delete _pcmi; _pcmi = 0; release_device(); - return -1; + return PortReconnectError; } engine.reconnect_ports (); @@ -599,7 +991,7 @@ AlsaAudioBackend::_start (bool for_latency_measurement) delete _pcmi; _pcmi = 0; release_device(); _run = false; - return -1; + return ProcessThreadStartError; } else { PBD::warning << _("AlsaAudioBackend: cannot acquire realtime permissions.") << endmsg; } @@ -613,10 +1005,10 @@ AlsaAudioBackend::_start (bool for_latency_measurement) delete _pcmi; _pcmi = 0; release_device(); _run = false; - return -1; + return ProcessThreadStartError; } - return 0; + return NoError; } int @@ -646,8 +1038,9 @@ AlsaAudioBackend::stop () delete m; } - unregister_system_ports(); + unregister_ports(); delete _pcmi; _pcmi = 0; + _midi_ins = _midi_outs = 0; release_device(); return (_active == false) ? 0 : -1; @@ -656,11 +1049,7 @@ AlsaAudioBackend::stop () int AlsaAudioBackend::freewheel (bool onoff) { - if (onoff == _freewheeling) { - return 0; - } _freewheeling = onoff; - engine.freewheel_callback (onoff); return 0; } @@ -683,13 +1072,13 @@ AlsaAudioBackend::raw_buffer_size (DataType t) } /* Process time */ -pframes_t +framepos_t AlsaAudioBackend::sample_time () { return _processed_samples; } -pframes_t +framepos_t AlsaAudioBackend::sample_time_at_cycle_start () { return _processed_samples; @@ -698,7 +1087,15 @@ AlsaAudioBackend::sample_time_at_cycle_start () pframes_t AlsaAudioBackend::samples_since_cycle_start () { - return 0; + if (!_active || !_run || _freewheeling || _freewheel) { + return 0; + } + if (_last_process_start == 0) { + return 0; + } + + const int64_t elapsed_time_us = g_get_monotonic_time() - _last_process_start; + return std::max((pframes_t)0, (pframes_t)rint(1e-6 * elapsed_time_us * _samplerate)); } @@ -757,6 +1154,10 @@ AlsaAudioBackend::join_process_threads () bool AlsaAudioBackend::in_process_thread () { + if (pthread_equal (_main_thread, pthread_self()) != 0) { + return true; + } + for (std::vector::const_iterator i = _threads.begin (); i != _threads.end (); ++i) { if (pthread_equal (*i, pthread_self ()) != 0) { @@ -819,12 +1220,43 @@ std::string AlsaAudioBackend::get_port_name (PortEngine::PortHandle port) const { if (!valid_port (port)) { - PBD::error << _("AlsaBackend::get_port_name: Invalid Port(s)") << endmsg; + PBD::warning << _("AlsaBackend::get_port_name: Invalid Port(s)") << endmsg; return std::string (); } return static_cast(port)->name (); } +int +AlsaAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const +{ + if (!valid_port (port)) { + PBD::warning << _("AlsaBackend::get_port_property: Invalid Port(s)") << endmsg; + return -1; + } + if (key == "http://jackaudio.org/metadata/pretty-name") { + type = ""; + value = static_cast(port)->pretty_name (); + if (!value.empty()) { + return 0; + } + } + return -1; +} + +int +AlsaAudioBackend::set_port_property (PortHandle port, const std::string& key, const std::string& value, const std::string& type) +{ + if (!valid_port (port)) { + PBD::warning << _("AlsaBackend::set_port_property: Invalid Port(s)") << endmsg; + return -1; + } + if (key == "http://jackaudio.org/metadata/pretty-name" && type.empty ()) { + static_cast(port)->set_pretty_name (value); + return 0; + } + return -1; +} + PortEngine::PortHandle AlsaAudioBackend::get_port_by_name (const std::string& name) const { @@ -848,7 +1280,7 @@ AlsaAudioBackend::get_ports ( } 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; @@ -914,8 +1346,8 @@ AlsaAudioBackend::add_port ( void AlsaAudioBackend::unregister_port (PortEngine::PortHandle port_handle) { - if (!valid_port (port_handle)) { - PBD::error << _("AlsaBackend::unregister_port: Invalid Port.") << endmsg; + if (!_run) { + return; } AlsaPort* port = static_cast(port_handle); std::vector::iterator i = std::find (_ports.begin (), _ports.end (), static_cast(port_handle)); @@ -933,40 +1365,46 @@ AlsaAudioBackend::register_system_audio_ports() { 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; + + const uint32_t lcpp = (_periods_per_cycle - 2) * _samples_per_period; /* audio ports */ - lr.min = lr.max = _samples_per_period + (_measure_latency ? 0 : _systemic_audio_input_latency); + lr.min = lr.max = (_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); PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast(IsOutput | IsPhysical | IsTerminal)); if (!p) return -1; set_latency_range (p, false, lr); - _system_inputs.push_back(static_cast(p)); + AlsaPort *ap = static_cast(p); + //ap->set_pretty_name ("") + _system_inputs.push_back (ap); } - lr.min = lr.max = _samples_per_period + (_measure_latency ? 0 : _systemic_audio_output_latency); + lr.min = lr.max = lcpp + (_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); PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast(IsInput | IsPhysical | IsTerminal)); if (!p) return -1; set_latency_range (p, true, lr); - _system_outputs.push_back(static_cast(p)); + AlsaPort *ap = static_cast(p); + //ap->set_pretty_name ("") + _system_outputs.push_back (ap); } return 0; } int -AlsaAudioBackend::register_system_midi_ports() +AlsaAudioBackend::register_system_midi_ports(const std::string device) { std::map devices; - int midi_ins = 0; - int midi_outs = 0; - if (_midi_driver_option == _("None")) { + // TODO use consistent numbering when re-adding devices: _midi_ins, _midi_outs + + if (_midi_driver_option == get_standard_device_name(DeviceNone)) { return 0; } else if (_midi_driver_option == _("ALSA raw devices")) { get_alsa_rawmidi_device_names(devices); @@ -975,15 +1413,18 @@ AlsaAudioBackend::register_system_midi_ports() } for (std::map::const_iterator i = devices.begin (); i != devices.end(); ++i) { + if (!device.empty() && device != i->first) { + continue; + } struct AlsaMidiDeviceInfo * nfo = midi_device_info(i->first); if (!nfo) continue; if (!nfo->enabled) continue; AlsaMidiOut *mout; if (_midi_driver_option == _("ALSA raw devices")) { - mout = new AlsaRawMidiOut (i->second.c_str()); + mout = new AlsaRawMidiOut (i->first, i->second.c_str()); } else { - mout = new AlsaSeqMidiOut (i->second.c_str()); + mout = new AlsaSeqMidiOut (i->first, i->second.c_str()); } if (mout->state ()) { @@ -1001,26 +1442,28 @@ AlsaAudioBackend::register_system_midi_ports() delete mout; } else { char tmp[64]; - snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", ++midi_ins); + snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", ++_midi_ins); PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast(IsInput | IsPhysical | IsTerminal)); if (!p) { mout->stop(); delete mout; } LatencyRange lr; - lr.min = lr.max = _samples_per_period + (_measure_latency ? 0 : nfo->systemic_output_latency); - set_latency_range (p, false, lr); - static_cast(p)->set_n_periods(2); - _system_midi_out.push_back(static_cast(p)); + lr.min = lr.max = (_measure_latency ? 0 : nfo->systemic_output_latency); + set_latency_range (p, true, lr); + static_cast(p)->set_n_periods(_periods_per_cycle); // TODO check MIDI alignment + AlsaPort *ap = static_cast(p); + ap->set_pretty_name (i->first); + _system_midi_out.push_back (ap); _rmidi_out.push_back (mout); } } AlsaMidiIn *midin; if (_midi_driver_option == _("ALSA raw devices")) { - midin = new AlsaRawMidiIn (i->second.c_str()); + midin = new AlsaRawMidiIn (i->first, i->second.c_str()); } else { - midin = new AlsaSeqMidiIn (i->second.c_str()); + midin = new AlsaSeqMidiIn (i->first, i->second.c_str()); } if (midin->state ()) { @@ -1038,7 +1481,7 @@ AlsaAudioBackend::register_system_midi_ports() delete midin; } else { char tmp[64]; - snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", ++midi_outs); + snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", ++_midi_outs); PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast(IsOutput | IsPhysical | IsTerminal)); if (!p) { midin->stop(); @@ -1046,9 +1489,11 @@ AlsaAudioBackend::register_system_midi_ports() continue; } LatencyRange lr; - lr.min = lr.max = _samples_per_period + (_measure_latency ? 0 : nfo->systemic_input_latency); + lr.min = lr.max = (_measure_latency ? 0 : nfo->systemic_input_latency); set_latency_range (p, false, lr); - _system_midi_in.push_back(static_cast(p)); + AlsaPort *ap = static_cast(p); + ap->set_pretty_name (i->first); + _system_midi_in.push_back (ap); _rmidi_in.push_back (midin); } } @@ -1057,7 +1502,7 @@ AlsaAudioBackend::register_system_midi_ports() } void -AlsaAudioBackend::unregister_system_ports() +AlsaAudioBackend::unregister_ports (bool system_only) { size_t i = 0; _system_inputs.clear(); @@ -1066,8 +1511,9 @@ AlsaAudioBackend::unregister_system_ports() _system_midi_out.clear(); while (i < _ports.size ()) { AlsaPort* port = _ports[i]; - if (port->is_physical () && port->is_terminal ()) { + if (! system_only || (port->is_physical () && port->is_terminal ())) { port->disconnect_all (); + delete port; _ports.erase (_ports.begin() + i); } else { ++i; @@ -1224,9 +1670,11 @@ AlsaAudioBackend::midi_event_put ( assert (buffer && port_buffer); AlsaMidiBuffer& dst = * static_cast(port_buffer); if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) { +#ifndef NDEBUG + // nevermind, ::get_buffer() sorts events fprintf (stderr, "AlsaMidiBuffer: it's too late for this event. %d > %d\n", (pframes_t)dst.back ()->timestamp (), timestamp); - return -1; +#endif } dst.push_back (boost::shared_ptr(new AlsaMidiEvent (timestamp, buffer, size))); return 0; @@ -1288,14 +1736,28 @@ AlsaAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playb LatencyRange AlsaAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback) { + LatencyRange r; if (!valid_port (port)) { PBD::error << _("AlsaPort::get_latency_range (): invalid port.") << endmsg; - LatencyRange r; r.min = 0; r.max = 0; return r; } - return static_cast(port)->latency_range (for_playback); + AlsaPort *p = static_cast(port); + assert(p); + + r = p->latency_range (for_playback); + if (p->is_physical() && p->is_terminal()) { + if (p->is_input() && for_playback) { + r.min += _samples_per_period; + r.max += _samples_per_period; + } + if (p->is_output() && !for_playback) { + r.min += _samples_per_period; + r.max += _samples_per_period; + } + } + return r; } /* Discovering physical ports */ @@ -1392,12 +1854,10 @@ AlsaAudioBackend::main_process_thread () _active = true; _processed_samples = 0; - uint64_t clock1, clock2; - clock1 = g_get_monotonic_time(); + uint64_t clock1; _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(); @@ -1405,18 +1865,33 @@ AlsaAudioBackend::main_process_thread () while (_run) { long nr; bool xrun = false; - if (!_freewheeling) { + + if (_freewheeling != _freewheel) { + _freewheel = _freewheeling; + engine.freewheel_callback (_freewheel); + } + + if (!_freewheel) { nr = _pcmi->pcm_wait (); if (_pcmi->state () > 0) { ++no_proc_errors; xrun = true; } - if (_pcmi->state () < 0 || no_proc_errors > bailout) { + if (_pcmi->state () < 0) { PBD::error << _("AlsaAudioBackend: I/O error. Audio Process Terminated.") << endmsg; break; } - while (nr >= (long)_samples_per_period) { + if (no_proc_errors > bailout) { + PBD::error + << string_compose ( + _("AlsaAudioBackend: Audio Process Terminated after %1 consecutive x-runs."), + no_proc_errors) + << endmsg; + break; + } + + while (nr >= (long)_samples_per_period && _freewheeling == _freewheel) { uint32_t i = 0; clock1 = g_get_monotonic_time(); no_proc_errors = 0; @@ -1427,7 +1902,7 @@ AlsaAudioBackend::main_process_thread () } _pcmi->capt_done (_samples_per_period); - /* de-queue midi*/ + /* de-queue incoming midi*/ i = 0; for (std::vector::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) { assert (_rmidi_in.size() > i); @@ -1448,25 +1923,26 @@ AlsaAudioBackend::main_process_thread () memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample)); } + /* call engine process callback */ + _last_process_start = g_get_monotonic_time(); if (engine.process_callback (_samples_per_period)) { _pcmi->pcm_stop (); _active = false; return 0; } - i = 0; - for (std::vector::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) { + for (std::vector::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) { static_cast(*it)->next_period(); } - /* queue midi */ + /* queue outgoing midi */ i = 0; for (std::vector::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) { assert (_rmidi_out.size() > i); - const AlsaMidiBuffer src = static_cast(*it)->const_buffer(); + const AlsaMidiBuffer * src = static_cast(*it)->const_buffer(); AlsaMidiOut *rm = _rmidi_out.at(i); rm->sync_time (clock1); - for (AlsaMidiBuffer::const_iterator mit = src.begin (); mit != src.end (); ++mit) { + for (AlsaMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) { rm->send_event ((*mit)->timestamp(), (*mit)->data(), (*mit)->size()); } } @@ -1484,32 +1960,58 @@ AlsaAudioBackend::main_process_thread () nr -= _samples_per_period; _processed_samples += _samples_per_period; - /* calculate DSP load */ - clock2 = g_get_monotonic_time(); - const int64_t elapsed_time = clock2 - clock1; - _dsp_load = elapsed_time / (float) nomial_time; + _dsp_load_calc.set_max_time(_samplerate, _samples_per_period); + _dsp_load_calc.set_start_timestamp_us (clock1); + _dsp_load_calc.set_stop_timestamp_us (g_get_monotonic_time()); + _dsp_load = _dsp_load_calc.get_dsp_load (); } if (xrun && (_pcmi->capt_xrun() > 0 || _pcmi->play_xrun() > 0)) { engine.Xrun (); #if 0 - fprintf(stderr, "ALSA x-run read: %.1f ms, write: %.1f ms\n", + fprintf(stderr, "ALSA x-run read: %.2f ms, write: %.2f ms\n", _pcmi->capt_xrun() * 1000.0, _pcmi->play_xrun() * 1000.0); #endif } } else { // Freewheelin' + + // zero audio input buffers for (std::vector::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) { memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample)); } - for (std::vector::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) { + + clock1 = g_get_monotonic_time(); + uint32_t i = 0; + for (std::vector::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) { static_cast((*it)->get_buffer(0))->clear (); + AlsaMidiIn *rm = _rmidi_in.at(i); + void *bptr = (*it)->get_buffer(0); + midi_clear(bptr); // zero midi buffer + + // TODO add an API call for this. + pframes_t time; + uint8_t data[64]; // match MaxAlsaEventSize in alsa_rawmidi.cc + size_t size = sizeof(data); + while (rm->recv_event (time, data, size)) { + ; // discard midi-data from HW. + } + rm->sync_time (clock1); } + _last_process_start = 0; if (engine.process_callback (_samples_per_period)) { _pcmi->pcm_stop (); + _active = false; return 0; } + + // drop all outgoing MIDI messages + for (std::vector::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) { + void *bptr = (*it)->get_buffer(0); + midi_clear(bptr); + } + _dsp_load = 1.0; Glib::usleep (100); // don't hog cpu } @@ -1561,6 +2063,7 @@ static boost::shared_ptr backend_factory (AudioEngine& e); static int instantiate (const std::string& arg1, const std::string& /* arg2 */); static int deinstantiate (); static bool already_configured (); +static bool available (); static ARDOUR::AudioBackendInfo _descriptor = { "ALSA", @@ -1568,6 +2071,7 @@ static ARDOUR::AudioBackendInfo _descriptor = { deinstantiate, backend_factory, already_configured, + available }; static boost::shared_ptr @@ -1599,6 +2103,12 @@ already_configured () return false; } +static bool +available () +{ + return true; +} + extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor () { return &_descriptor; @@ -1789,8 +2299,8 @@ void* AlsaMidiPort::get_buffer (pframes_t /* nframes */) for (std::vector::const_iterator i = get_connections ().begin (); i != get_connections ().end (); ++i) { - const AlsaMidiBuffer src = static_cast(*i)->const_buffer (); - for (AlsaMidiBuffer::const_iterator it = src.begin (); it != src.end (); ++it) { + const AlsaMidiBuffer * src = static_cast(*i)->const_buffer (); + for (AlsaMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) { (_buffer[_bufperiod]).push_back (boost::shared_ptr(new AlsaMidiEvent (**it))); } }