#include <glibmm.h>
#include "alsa_audiobackend.h"
-#include "rt_thread.h"
#include "pbd/compose.h"
#include "pbd/error.h"
#include "pbd/file_utils.h"
+#include "pbd/pthread_utils.h"
#include "ardour/filesystem_paths.h"
#include "ardour/port_manager.h"
#include "ardouralsautil/devicelist.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace ARDOUR;
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::_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)
, _run (false)
, _active (false)
+ , _freewheel (false)
, _freewheeling (false)
- , _audio_device("")
- , _midi_device("")
+ , _measure_latency (false)
+ , _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)
, _periods_per_cycle (2)
- , _dsp_load (0)
, _n_inputs (0)
, _n_outputs (0)
- , _systemic_input_latency (0)
- , _systemic_output_latency (0)
+ , _systemic_audio_input_latency (0)
+ , _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;
+
+ _port_connection_queue.reserve (128);
}
AlsaAudioBackend::~AlsaAudioBackend ()
std::vector<AudioBackend::DeviceStatus>
AlsaAudioBackend::enumerate_devices () const
{
- std::vector<AudioBackend::DeviceStatus> s;
+ _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) {
- s.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 (get_standard_device_name(DeviceNone), 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 _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 (get_standard_device_name(DeviceNone), 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 s;
+ return _output_audio_device_status;
}
void
AlsaAudioBackend::release_device()
{
_reservation_connection.drop_connections();
- delete _device_reservation;
+ ARDOUR::SystemExec * tmp = _device_reservation;
_device_reservation = 0;
+ delete tmp;
}
bool
_reservation_succeeded = false;
std::string request_device_exe;
- if (!PBD::find_file_in_search_path (
+ if (!PBD::find_file (
PBD::Searchpath(Glib::build_filename(ARDOUR::ardour_dll_directory(), "ardouralsautil")
+ G_SEARCHPATH_SEPARATOR_S + ARDOUR::ardour_dll_directory()),
"ardour-request-device", request_device_exe))
{
char **argp;
char tmp[128];
- argp=(char**) calloc(3,sizeof(char*));
+ argp=(char**) calloc(5,sizeof(char*));
argp[0] = strdup(request_device_exe.c_str());
+ argp[1] = strdup("-P");
+ snprintf(tmp, sizeof(tmp), "%d", getpid());
+ argp[2] = strdup(tmp);
snprintf(tmp, sizeof(tmp), "Audio%d", device_number);
- argp[1] = strdup(tmp);
- argp[2] = 0;
+ argp[3] = strdup(tmp);
+ argp[4] = 0;
_device_reservation = new ARDOUR::SystemExec(request_device_exe, argp);
_device_reservation->ReadStdout.connect_same_thread (_reservation_connection, boost::bind (&AlsaAudioBackend::reservation_stdout, this, _1 ,_2));
}
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 == 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<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 == 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<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 == 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<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 == 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<uint32_t>
+AlsaAudioBackend::available_period_sizes (const std::string& driver) const
+{
+ std::vector<uint32_t> ps;
+ ps.push_back (2);
+ ps.push_back (3);
+ return ps;
}
bool
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<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 == get_standard_device_name(DeviceNone)) {
+ _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)
{
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;
int
AlsaAudioBackend::set_systemic_input_latency (uint32_t sl)
{
- _systemic_input_latency = sl;
+ _systemic_audio_input_latency = sl;
+ if (_run) {
+ update_systemic_audio_latencies();
+ }
return 0;
}
int
AlsaAudioBackend::set_systemic_output_latency (uint32_t sl)
{
- _systemic_output_latency = sl;
+ _systemic_audio_output_latency = sl;
+ if (_run) {
+ update_systemic_audio_latencies();
+ }
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;
+ if (_run && nfo->enabled) {
+ update_systemic_midi_latencies ();
+ }
+ 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;
+ 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<AlsaPort*>::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<AlsaPort*>::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<AlsaPort*>::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<AlsaPort*>::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
return _samples_per_period;
}
+uint32_t
+AlsaAudioBackend::period_size () const
+{
+ return _periods_per_cycle;
+}
+
bool
AlsaAudioBackend::interleaved () const
{
uint32_t
AlsaAudioBackend::systemic_input_latency () const
{
- return _systemic_input_latency;
+ return _systemic_audio_input_latency;
}
uint32_t
AlsaAudioBackend::systemic_output_latency () const
{
- return _systemic_output_latency;
+ 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);
+ }
+ }
+
+ assert(_midi_driver_option != get_standard_device_name(DeviceNone));
+
+ std::map<std::string, std::string> devices;
+ if (_midi_driver_option == _("ALSA raw devices")) {
+ get_alsa_rawmidi_device_names(devices);
+ } else {
+ get_alsa_sequencer_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-"));
+ if (_midi_options.empty()) {
+ _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;
+}
+
+std::vector<AudioBackend::DeviceStatus>
+AlsaAudioBackend::enumerate_midi_devices () const
+{
+ _midi_device_status.clear();
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 (_midi_driver_option == _("ALSA raw devices")) {
+ get_alsa_rawmidi_device_names (devices);
+ }
+ else if (_midi_driver_option == _("ALSA sequencer")) {
+ get_alsa_sequencer_names (devices);
}
- if (m.size() > 2) {
- m.push_back (_("-All-"));
+
+ for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
+ _midi_device_status.push_back (DeviceStatus (i->first, true));
}
- return m;
+ return _midi_device_status;
}
int
AlsaAudioBackend::set_midi_option (const std::string& opt)
{
- _midi_device = opt;
+ 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;
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;
+ 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<AlsaPort*>::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<AlsaPort*>::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;
+}
+
+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;
+ if (for_latency_measurement != _measure_latency) {
+ _measure_latency = for_latency_measurement;
+ update_systemic_audio_latencies();
+ update_systemic_midi_latencies ();
+ PBD::info << _("AlsaAudioBackend: reload latencies.") << endmsg;
+ return NoError;
+ }
+ PBD::info << _("AlsaAudioBackend: already active.") << endmsg;
+ return BackendReinitializationError;
}
- if (_ports.size()) {
+ if (_ports.size () || _portmap.size ()) {
PBD::warning << _("AlsaAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
_system_inputs.clear();
_system_outputs.clear();
_system_midi_in.clear();
_system_midi_out.clear();
_ports.clear();
+ _portmap.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<std::string, std::string> 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<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 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
PBD::warning << _("AlsaAudioBackend: sample rate does not match.") << endmsg;
}
- if (for_latency_measurement) {
- _systemic_input_latency = 0;
- _systemic_output_latency = 0;
- }
+ _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);
+ engine.buffer_size_change (_samples_per_period);
+
if (engine.reestablish_ports ()) {
PBD::error << _("AlsaAudioBackend: Could not re-establish ports.") << endmsg;
delete _pcmi; _pcmi = 0;
release_device();
- return -1;
+ return PortReconnectError;
}
- engine.buffer_size_change (_samples_per_period);
engine.reconnect_ports ();
_run = true;
+ _port_change_flag = false;
- if (_realtime_pthread_create (SCHED_FIFO, -20,
+ if (pbd_realtime_pthread_create (PBD_SCHED_FIFO, -20, 100000,
&_main_thread, pthread_process, this))
{
if (pthread_create (&_main_thread, NULL, pthread_process, this))
delete _pcmi; _pcmi = 0;
release_device();
_run = false;
- return -1;
+ return ProcessThreadStartError;
} else {
PBD::warning << _("AlsaAudioBackend: cannot acquire realtime permissions.") << endmsg;
}
delete _pcmi; _pcmi = 0;
release_device();
_run = false;
- return -1;
+ return ProcessThreadStartError;
}
- return 0;
+ return NoError;
}
int
AlsaAudioBackend::stop ()
{
void *status;
- if (!_active) {
+ if (!_run) {
return 0;
}
}
while (!_rmidi_out.empty ()) {
- AlsaRawMidiIO *m = _rmidi_out.back ();
+ AlsaMidiIO *m = _rmidi_out.back ();
m->stop();
_rmidi_out.pop_back ();
delete m;
}
while (!_rmidi_in.empty ()) {
- AlsaRawMidiIO *m = _rmidi_in.back ();
+ AlsaMidiIO *m = _rmidi_in.back ();
m->stop();
_rmidi_in.pop_back ();
delete m;
}
- unregister_system_ports();
+ unregister_ports();
delete _pcmi; _pcmi = 0;
+ _midi_ins = _midi_outs = 0;
release_device();
+ _measure_latency = false;
return (_active == false) ? 0 : -1;
}
int
AlsaAudioBackend::freewheel (bool onoff)
{
- if (onoff == _freewheeling) {
- return 0;
- }
_freewheeling = onoff;
- engine.freewheel_callback (onoff);
return 0;
}
}
/* 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;
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));
}
pthread_attr_t attr;
size_t stacksize = 100000;
- pthread_attr_init (&attr);
- pthread_attr_setstacksize (&attr, stacksize);
ThreadData* td = new ThreadData (this, func, stacksize);
- if (pthread_create (&thread_id, &attr, alsa_process_thread, td)) {
- PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
+ if (pbd_realtime_pthread_create (PBD_SCHED_FIFO, -22, stacksize,
+ &thread_id, alsa_process_thread, td)) {
+ pthread_attr_init (&attr);
+ pthread_attr_setstacksize (&attr, stacksize);
+ if (pthread_create (&thread_id, &attr, alsa_process_thread, td)) {
+ PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
+ pthread_attr_destroy (&attr);
+ return -1;
+ }
pthread_attr_destroy (&attr);
- return -1;
}
- pthread_attr_destroy (&attr);
_threads.push_back (thread_id);
return 0;
bool
AlsaAudioBackend::in_process_thread ()
{
+ if (pthread_equal (_main_thread, pthread_self()) != 0) {
+ return true;
+ }
+
for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
{
if (pthread_equal (*i, pthread_self ()) != 0) {
void
AlsaAudioBackend::update_latencies ()
{
+ // trigger latency callback in RT thread (locked graph)
+ port_connect_add_remove_callback();
}
/* PORTENGINE API */
int
AlsaAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
{
+ std::string newname (_instance_name + ":" + name);
if (!valid_port (port)) {
- PBD::error << _("AlsaBackend::set_port_name: Invalid Port(s)") << endmsg;
+ PBD::error << _("AlsaBackend::set_port_name: Invalid Port") << endmsg;
return -1;
}
- return static_cast<AlsaPort*>(port)->set_name (_instance_name + ":" + name);
+ if (find_port (newname)) {
+ PBD::error << _("AlsaBackend::set_port_name: Port with given name already exists") << endmsg;
+ return -1;
+ }
+
+ AlsaPort* p = static_cast<AlsaPort*>(port);
+ _portmap.erase (p->name());
+ _portmap.insert (make_pair (newname, p));
+ return p->set_name (newname);
}
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<AlsaPort*>(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<AlsaPort*>(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<AlsaPort*>(port)->set_pretty_name (value);
+ return 0;
+ }
+ return -1;
+}
+
PortEngine::PortHandle
AlsaAudioBackend::get_port_by_name (const std::string& name) const
{
use_regexp = true;
}
}
- for (size_t i = 0; i < _ports.size (); ++i) {
- AlsaPort* port = _ports[i];
- if ((port->type () == type) && (port->flags () & flags)) {
+
+ for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ AlsaPort* port = *i;
+ 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;
return 0;
}
- _ports.push_back (port);
+ _ports.insert (port);
+ _portmap.insert (make_pair (name, port));
return 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<AlsaPort*>(port_handle);
-
std::vector<AlsaPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<AlsaPort*>(port_handle));
+
PortIndex::iterator i = std::find (_ports.begin(), _ports.end(), static_cast<AlsaPort*>(port_handle));
if (i == _ports.end ()) {
PBD::error << _("AlsaBackend::unregister_port: Failed to find port") << endmsg;
return;
}
disconnect_all(port_handle);
+ _portmap.erase (port->name());
_ports.erase (i);
delete port;
}
{
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 * _periods_per_cycle + _systemic_input_latency;
+ lr.min = lr.max = (_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<PortFlags>(IsOutput | IsPhysical | IsTerminal));
if (!p) return -1;
set_latency_range (p, false, lr);
- _system_inputs.push_back(static_cast<AlsaPort*>(p));
+ AlsaPort *ap = static_cast<AlsaPort*>(p);
+ //ap->set_pretty_name ("")
+ _system_inputs.push_back (ap);
}
- lr.min = lr.max = _samples_per_period * _periods_per_cycle + _systemic_output_latency;
+ lr.min = lr.max = lcpp + (_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<PortFlags>(IsInput | IsPhysical | IsTerminal));
if (!p) return -1;
- set_latency_range (p, false, lr);
- _system_outputs.push_back(static_cast<AlsaPort*>(p));
+ set_latency_range (p, true, lr);
+ AlsaPort *ap = static_cast<AlsaPort*>(p);
+ //ap->set_pretty_name ("")
+ _system_outputs.push_back (ap);
}
return 0;
}
+/* libs/ardouralsautil/devicelist.cc appends either of
+ * " (IO)", " (I)", or " (O)"
+ * depending of the device is full-duples or half-duplex
+ */
+static std::string replace_name_io (std::string const& name, bool in)
+{
+ if (name.empty ()) {
+ return "";
+ }
+ size_t pos = name.find_last_of ('(');
+ if (pos == std::string::npos) {
+ assert (0); // this should never happen.
+ return name;
+ }
+ return name.substr (0, pos) + "(" + (in ? "In" : "Out") + ")";
+}
+
int
-AlsaAudioBackend::register_system_midi_ports()
+AlsaAudioBackend::register_system_midi_ports(const std::string device)
{
- LatencyRange lr;
- std::vector<std::string> devices;
+ std::map<std::string, std::string> devices;
+
+ // TODO use consistent numbering when re-adding devices: _midi_ins, _midi_outs
- if (_midi_device == _("-None-")) {
+ if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
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 if (_midi_driver_option == _("ALSA raw devices")) {
+ get_alsa_rawmidi_device_names(devices);
} 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_sequencer_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) {
+ 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->first, i->second.c_str());
+ } else {
+ mout = new AlsaSeqMidiOut (i->first, i->second.c_str());
+ }
- AlsaRawMidiOut *mout = new AlsaRawMidiOut (i->c_str());
if (mout->state ()) {
PBD::warning << string_compose (
- _("AlsaRawMidiOut: failed to open midi device '%1'."), *i)
+ _("AlsaMidiOut: 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)
+ _("AlsaMidiOut: 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 = (nfo->systemic_output_latency);
+ set_latency_range (p, true, lr);
+ static_cast<AlsaMidiPort*>(p)->set_n_periods(_periods_per_cycle); // TODO check MIDI alignment
+ AlsaPort *ap = static_cast<AlsaPort*>(p);
+ ap->set_pretty_name (replace_name_io (i->first, false));
+ _system_midi_out.push_back (ap);
_rmidi_out.push_back (mout);
}
}
- AlsaRawMidiIn *midin = new AlsaRawMidiIn (i->c_str());
+ AlsaMidiIn *midin;
+ if (_midi_driver_option == _("ALSA raw devices")) {
+ midin = new AlsaRawMidiIn (i->first, i->second.c_str());
+ } else {
+ midin = new AlsaSeqMidiIn (i->first, i->second.c_str());
+ }
+
if (midin->state ()) {
PBD::warning << string_compose (
- _("AlsaRawMidiIn: failed to open midi device '%1'."), *i)
+ _("AlsaMidiIn: 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)
+ _("AlsaMidiIn: 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 = (nfo->systemic_input_latency);
+ set_latency_range (p, false, lr);
+ AlsaPort *ap = static_cast<AlsaPort*>(p);
+ ap->set_pretty_name (replace_name_io (i->first, true));
+ _system_midi_in.push_back (ap);
_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_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_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, false, lr);
- _system_midi_out.push_back(static_cast<AlsaPort*>(p));
- }
-
return 0;
}
void
-AlsaAudioBackend::unregister_system_ports()
+AlsaAudioBackend::unregister_ports (bool system_only)
{
- size_t i = 0;
_system_inputs.clear();
_system_outputs.clear();
_system_midi_in.clear();
_system_midi_out.clear();
- while (i < _ports.size ()) {
- AlsaPort* port = _ports[i];
- if (port->is_physical () && port->is_terminal ()) {
+
+ for (PortIndex::iterator i = _ports.begin (); i != _ports.end ();) {
+ PortIndex::iterator cur = i++;
+ AlsaPort* port = *cur;
+ if (! system_only || (port->is_physical () && port->is_terminal ())) {
port->disconnect_all ();
- _ports.erase (_ports.begin() + i);
- } else {
- ++i;
+ _portmap.erase (port->name());
+ delete port;
+ _ports.erase (cur);
}
}
}
AlsaAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
{
AlsaPort* dst_port = find_port (dst);
+#ifndef NDEBUG
if (!valid_port (src) || !dst_port) {
PBD::error << _("AlsaBackend::connected_to: Invalid Port") << endmsg;
return false;
}
+#endif
return static_cast<AlsaPort*>(src)->is_connected (dst_port);
}
assert (0 == names.size ());
- const std::
vector<AlsaPort*>& connected_ports = static_cast<AlsaPort*>(port)->get_connections ();
+ const std::
set<AlsaPort*>& connected_ports = static_cast<AlsaPort*>(port)->get_connections ();
- for (std::
vector<AlsaPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
+ for (std::
set<AlsaPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
names.push_back ((*i)->name ());
}
int
AlsaAudioBackend::midi_event_get (
pframes_t& timestamp,
- size_t& size, uint8_t** buf, void* port_buffer,
+ size_t& size, uint8_t const** buf, void* port_buffer,
uint32_t event_index)
{
assert (buf && port_buffer);
if (event_index >= source.size ()) {
return -1;
}
- AlsaMidiEvent * const event = source[event_index].get ();
+ AlsaMidiEvent const& event = source[event_index];
- timestamp = event->timestamp ();
- size = event->size ();
- *buf = event->data ();
+ timestamp = event.timestamp ();
+ size = event.size ();
+ *buf = event.data ();
return 0;
}
const uint8_t* buffer, size_t size)
{
assert (buffer && port_buffer);
+ if (size >= MaxAlsaMidiEventSize) {
+ return -1;
+ }
AlsaMidiBuffer& dst = * static_cast<AlsaMidiBuffer*>(port_buffer);
- if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
+#ifndef NDEBUG
+ if (dst.size () && (pframes_t)dst.back ().timestamp () > timestamp) {
+ // 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;
+ (pframes_t)dst.back ().timestamp (), timestamp);
}
- dst.push_back (boost::shared_ptr<AlsaMidiEvent>(new AlsaMidiEvent (timestamp, buffer, size)));
+#endif
+ dst.push_back (AlsaMidiEvent (timestamp, buffer, size));
return 0;
}
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<AlsaPort*>(port)->latency_range (for_playback);
+ AlsaPort *p = static_cast<AlsaPort*>(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 */
void
AlsaAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
{
- for (size_t i = 0; i < _ports.size (); ++i) {
- AlsaPort* port = _ports[i];
+ for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ AlsaPort* port = *i;
if ((port->type () == type) && port->is_input () && port->is_physical ()) {
port_names.push_back (port->name ());
}
void
AlsaAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
{
- for (size_t i = 0; i < _ports.size (); ++i) {
- AlsaPort* port = _ports[i];
+ for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ AlsaPort* port = *i;
if ((port->type () == type) && port->is_output () && port->is_physical ()) {
port_names.push_back (port->name ());
}
{
int n_midi = 0;
int n_audio = 0;
- for (size_t i = 0; i < _ports.size (); ++i) {
- AlsaPort* port = _ports[i];
+ for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ AlsaPort* port = *i;
if (port->is_output () && port->is_physical ()) {
switch (port->type ()) {
case DataType::AUDIO: ++n_audio; break;
{
int n_midi = 0;
int n_audio = 0;
- for (size_t i = 0; i < _ports.size (); ++i) {
- AlsaPort* port = _ports[i];
+ for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ AlsaPort* port = *i;
if (port->is_input () && port->is_physical ()) {
switch (port->type ()) {
case DataType::AUDIO: ++n_audio; break;
_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;
+
+ manager.registration_callback();
+ manager.graph_order_callback();
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 > 50) {
+ 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;
}
_pcmi->capt_done (_samples_per_period);
- /* de-queue midi*/
+ /* de-queue incoming midi*/
i = 0;
for (std::vector<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
assert (_rmidi_in.size() > i);
- AlsaRawMidiIn *rm = static_cast<AlsaRawMidiIn*>(_rmidi_in.at(i));
+ AlsaMidiIn *rm = _rmidi_in.at(i);
void *bptr = (*it)->get_buffer(0);
pframes_t time;
- uint8_t data[64]; // match MaxAlsaRawEventSize in alsa_rawmidi.cc
+ uint8_t data[MaxAlsaMidiEventSize];
size_t size = sizeof(data);
midi_clear(bptr);
while (rm->recv_event (time, data, size)) {
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;
}
- /* queue midi*/
+ for (std::vector<AlsaPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
+ static_cast<AlsaMidiPort*>(*it)->next_period();
+ }
+
+ /* queue outgoing midi */
i = 0;
for (std::vector<AlsaPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
assert (_rmidi_out.size() > i);
- AlsaRawMidiOut *rm = static_cast<AlsaRawMidiOut*>(_rmidi_out.at(i));
- const AlsaMidiBuffer *src = static_cast<const AlsaMidiBuffer*>((*it)->get_buffer(0));
- rm->sync_time (clock1); // ?? use clock pre DSP load?
+ const AlsaMidiBuffer * src = static_cast<const AlsaMidiPort*>(*it)->const_buffer();
+ AlsaMidiOut *rm = _rmidi_out.at(i);
+ rm->sync_time (clock1);
for (AlsaMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
- rm->send_event ((*mit)->timestamp(), (*mit)->data(), (*mit)->size());
+ rm->send_event (mit->timestamp (), mit->data (), mit->size ());
}
}
nr -= _samples_per_period;
_processed_samples += _samples_per_period;
- /* 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;
+ _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<AlsaPort*>::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<AlsaPort*>::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<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
static_cast<AlsaMidiBuffer*>((*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<AlsaPort*>::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
}
+ bool connections_changed = false;
+ bool ports_changed = false;
if (!pthread_mutex_trylock (&_port_callback_mutex)) {
+ if (_port_change_flag) {
+ ports_changed = true;
+ _port_change_flag = false;
+ }
+ if (!_port_connection_queue.empty ()) {
+ connections_changed = true;
+ }
while (!_port_connection_queue.empty ()) {
PortConnectData *c = _port_connection_queue.back ();
manager.connect_callback (c->a, c->b, c->c);
}
pthread_mutex_unlock (&_port_callback_mutex);
}
+ if (ports_changed) {
+ manager.registration_callback();
+ }
+ if (connections_changed) {
+ manager.graph_order_callback();
+ }
+ if (connections_changed || ports_changed) {
+ engine.latency_callback(false);
+ engine.latency_callback(true);
+ }
}
_pcmi->pcm_stop ();
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",
+ "ALSA",
instantiate,
deinstantiate,
backend_factory,
already_configured,
+ available
};
static boost::shared_ptr<AudioBackend>
return false;
}
+static bool
+available ()
+{
+ return true;
+}
+
extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
{
return &_descriptor;
void AlsaPort::_connect (AlsaPort *port, bool callback)
{
- _connections.push_back (port);
+ _connections.insert (port);
if (callback) {
port->_connect (this, false);
_alsa_backend.port_connect_callback (name(), port->name(), true);
void AlsaPort::_disconnect (AlsaPort *port, bool callback)
{
- std::vector<AlsaPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
-
+ std::set<AlsaPort*>::iterator it = _connections.find (port);
assert (it != _connections.end ());
-
_connections.erase (it);
-
if (callback) {
port->_disconnect (this, false);
_alsa_backend.port_connect_callback (name(), port->name(), false);
void AlsaPort::disconnect_all ()
{
while (!_connections.empty ()) {
- _connections.back ()->_disconnect (this, false);
- _alsa_backend.port_connect_callback (name(), _connections.back ()->name(), false);
- _connections.pop_back ();
+ std::set<AlsaPort*>::iterator it = _connections.begin ();
+ (*it)->_disconnect (this, false);
+ _alsa_backend.port_connect_callback (name(), (*it)->name(), false);
+ _connections.erase (it);
}
}
bool
AlsaPort::is_connected (const AlsaPort *port) const
{
- return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
+ return _connections.find (const_cast<AlsaPort *>(port)) != _connections.end ();
}
bool AlsaPort::is_physically_connected () const
{
- for (std::
vector<AlsaPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
+ for (std::
set<AlsaPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
if ((*it)->is_physical ()) {
return true;
}
void* AlsaAudioPort::get_buffer (pframes_t n_samples)
{
if (is_input ()) {
- std::vector<AlsaPort*>::const_iterator it = get_connections ().begin ();
- if (it == get_connections ().end ()) {
+ const std::set<AlsaPort *>& connections = get_connections ();
+ std::set<AlsaPort*>::const_iterator it = connections.begin ();
+ if (it == connections.end ()) {
memset (_buffer, 0, n_samples * sizeof (Sample));
} else {
AlsaAudioPort const * source = static_cast<const AlsaAudioPort*>(*it);
assert (source && source->is_output ());
memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
- while (++it != get_connections ().end ()) {
+ while (++it != connections.end ()) {
source = static_cast<const AlsaAudioPort*>(*it);
assert (source && source->is_output ());
Sample* dst = buffer ();
AlsaMidiPort::AlsaMidiPort (AlsaAudioBackend &b, const std::string& name, PortFlags flags)
: AlsaPort (b, name, flags)
+ , _n_periods (1)
+ , _bufperiod (0)
{
- _buffer.clear ();
+ _buffer[0].clear ();
+ _buffer[1].clear ();
+ _buffer[2].clear ();
+
+ _buffer[0].reserve(256);
+ _buffer[1].reserve(256);
+ _buffer[2].reserve(256);
}
AlsaMidiPort::~AlsaMidiPort () { }
struct MidiEventSorter {
- bool operator() (const boost::shared_ptr<AlsaMidiEvent>& a, const boost::shared_ptr<AlsaMidiEvent>& b) {
- return *a < *b;
+ bool operator() (AlsaMidiEvent const& a, AlsaMidiEvent const& b) {
+ return a < b;
}
};
void* AlsaMidiPort::get_buffer (pframes_t /* nframes */)
{
if (is_input ()) {
- _buffer.clear ();
- for (std::vector<AlsaPort*>::const_iterator i = get_connections ().begin ();
- i != get_connections ().end ();
+ (_buffer[_bufperiod]).clear ();
+ const std::set<AlsaPort*>& connections = get_connections ();
+ for (std::set<AlsaPort*>::const_iterator i = connections.begin ();
+ i != connections.end ();
++i) {
- const AlsaMidiBuffer src = static_cast<const AlsaMidiPort*>(*i)->const_buffer ();
- for (AlsaMidiBuffer::const_iterator it = src.begin (); it != src.end (); ++it) {
- _buffer.push_back (boost::shared_ptr<AlsaMidiEvent>(new AlsaMidiEvent (**it)));
+ const AlsaMidiBuffer * src = static_cast<const AlsaMidiPort*>(*i)->const_buffer ();
+ for (AlsaMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
+ (_buffer[_bufperiod]).push_back (*it);
}
}
- std::sort (_buffer.begin (), _buffer.end (), MidiEventSorter());
+ std::stable_sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
}
- return &_buffer;
+ return &(_buffer[_bufperiod]);
}
AlsaMidiEvent::AlsaMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
: _size (size)
, _timestamp (timestamp)
- , _data (0)
{
- if (size > 0) {
- _data = (uint8_t*) malloc (size);
+ if (size > 0 && size < MaxAlsaMidiEventSize) {
memcpy (_data, data, size);
}
}
AlsaMidiEvent::AlsaMidiEvent (const AlsaMidiEvent& other)
: _size (other.size ())
, _timestamp (other.timestamp ())
- , _data (0)
{
- if (other.size () && other.const_data ()) {
- _data = (uint8_t*) malloc (other.size ());
- memcpy (_data, other.const_data (), other.size ());
+ if (other._size > 0) {
+ assert (other._size < MaxAlsaMidiEventSize);
+ memcpy (_data, other._data, other._size);
}
};
-
-AlsaMidiEvent::~AlsaMidiEvent () {
- free (_data);
-};
projects / ardour.git / blobdiff