#include <sys/time.h>
#include <regex.h>
+#include <stdlib.h>
+
+#include <glibmm.h>
#include "dummy_audiobackend.h"
+
#include "pbd/error.h"
+#include "ardour/port_manager.h"
#include "i18n.h"
using namespace ARDOUR;
static std::string s_instance_name;
size_t DummyAudioBackend::_max_buffer_size = 8192;
+std::vector<std::string> DummyAudioBackend::_midi_options;
+std::vector<AudioBackend::DeviceStatus> DummyAudioBackend::_device_status;
-DummyAudioBackend::DummyAudioBackend (AudioEngine& e)
- : AudioBackend (e)
+DummyAudioBackend::DummyAudioBackend (AudioEngine& e, AudioBackendInfo& info)
+ : AudioBackend (e, info)
, _running (false)
, _freewheeling (false)
+ , _device ("")
, _samplerate (48000)
, _samples_per_period (1024)
, _dsp_load (0)
, _n_inputs (0)
, _n_outputs (0)
+ , _n_midi_inputs (0)
+ , _n_midi_outputs (0)
, _systemic_input_latency (0)
, _systemic_output_latency (0)
, _processed_samples (0)
+ , _port_change_flag (false)
{
_instance_name = s_instance_name;
+ _device = _("Silence");
+ pthread_mutex_init (&_port_callback_mutex, 0);
}
DummyAudioBackend::~DummyAudioBackend ()
{
+ pthread_mutex_destroy (&_port_callback_mutex);
}
/* AUDIOBACKEND API */
std::vector<AudioBackend::DeviceStatus>
DummyAudioBackend::enumerate_devices () const
{
- std::vector<AudioBackend::DeviceStatus> s;
- s.push_back (DeviceStatus (_("Dummy"), true));
- return s;
+ if (_device_status.empty()) {
+ _device_status.push_back (DeviceStatus (_("Silence"), true));
+ _device_status.push_back (DeviceStatus (_("Sine Wave"), true));
+ _device_status.push_back (DeviceStatus (_("Uniform White Noise"), true));
+ _device_status.push_back (DeviceStatus (_("Gaussian White Noise"), true));
+ _device_status.push_back (DeviceStatus (_("Pink Noise"), true));
+ _device_status.push_back (DeviceStatus (_("Pink Noise (low CPU)"), true));
+ }
+ return _device_status;
}
std::vector<float>
}
int
-DummyAudioBackend::set_device_name (const std::string&)
+DummyAudioBackend::set_device_name (const std::string& d)
{
+ _device = d;
return 0;
}
std::string
DummyAudioBackend::device_name () const
{
- return _("Dummy Device");
+ return _device;
}
float
return _systemic_output_latency;
}
+
/* MIDI */
std::vector<std::string>
DummyAudioBackend::enumerate_midi_options () const
{
- std::vector<std::string> m;
- m.push_back (_("None"));
- return m;
+ if (_midi_options.empty()) {
+ _midi_options.push_back (_("1 in, 1 out"));
+ _midi_options.push_back (_("2 in, 2 out"));
+ _midi_options.push_back (_("8 in, 8 out"));
+ }
+ return _midi_options;
}
int
-DummyAudioBackend::set_midi_option (const std::string&)
+DummyAudioBackend::set_midi_option (const std::string& opt)
{
- return -1;
+ if (opt == _("1 in, 1 out")) {
+ _n_midi_inputs = _n_midi_outputs = 1;
+ }
+ else if (opt == _("2 in, 2 out")) {
+ _n_midi_inputs = _n_midi_outputs = 2;
+ }
+ else if (opt == _("8 in, 8 out")) {
+ _n_midi_inputs = _n_midi_outputs = 8;
+ }
+ else {
+ _n_midi_inputs = _n_midi_outputs = 0;
+ }
+ return 0;
}
std::string
DummyAudioBackend::midi_option () const
{
- return "";
+ return ""; // TODO
}
/* State Control */
if (_ports.size()) {
PBD::warning << _("DummyAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
+ for (std::vector<DummyPort*>::const_iterator it = _ports.begin (); it != _ports.end (); ++it) {
+ PBD::info << _("DummyAudioBackend: port '") << (*it)->name () << "' exists." << endmsg;
+ }
+ _system_inputs.clear();
_ports.clear();
}
return -1;
}
+ engine.sample_rate_change (_samplerate);
+ engine.buffer_size_change (_samples_per_period);
+
if (engine.reestablish_ports ()) {
PBD::error << _("DummyAudioBackend: Could not re-establish ports.") << endmsg;
stop ();
}
engine.reconnect_ports ();
+ _port_change_flag = false;
if (pthread_create (&_main_thread, NULL, pthread_process, this)) {
PBD::error << _("DummyAudioBackend: cannot start.") << endmsg;
}
int timeout = 5000;
- while (!_running && --timeout > 0) { usleep (1000); }
+ while (!_running && --timeout > 0) { Glib::usleep (1000); }
if (timeout == 0 || !_running) {
PBD::error << _("DummyAudioBackend: failed to start process thread.") << endmsg;
{
void *status;
if (!_running) {
- return -1;
+ return 0;
}
_running = false;
PBD::error << _("DummyAudioBackend: failed to terminate.") << endmsg;
return -1;
}
- unregister_system_ports();
+ unregister_ports();
return 0;
}
{
switch (t) {
case DataType::AUDIO:
- return _max_buffer_size * sizeof(Sample);
+ return _samples_per_period * sizeof(Sample);
case DataType::MIDI:
return _max_buffer_size; // XXX not really limited
}
if (pthread_create (&thread_id, &attr, dummy_process_thread, td)) {
PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
+ pthread_attr_destroy (&attr);
return -1;
}
+ pthread_attr_destroy (&attr);
_threads.push_back (thread_id);
return 0;
{
for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
{
-#ifdef COMPILER_MINGW
- if (*i == GetCurrentThread ()) {
- return true;
- }
-#else // pthreads
if (pthread_equal (*i, pthread_self ()) != 0) {
return true;
}
-#endif
}
return false;
}
void
DummyAudioBackend::update_latencies ()
{
+ // trigger latency callback in RT thread (locked graph)
+ port_connect_add_remove_callback();
}
/* PORTENGINE API */
{
if (name.size () == 0) { return 0; }
if (flags & IsPhysical) { return 0; }
+ if (!_running) {
+ PBD::info << _("DummyBackend::register_port: Engine is not running.") << endmsg;
+ }
return add_port (_instance_name + ":" + name, type, flags);
}
DummyPort* port = NULL;
switch (type) {
case DataType::AUDIO:
- port = new DummyAudioPort (name, flags);
+ port = new DummyAudioPort (*this, name, flags);
break;
case DataType::MIDI:
- port = new DummyMidiPort (name, flags);
+ port = new DummyMidiPort (*this, name, flags);
break;
default:
PBD::error << _("DummyBackend::register_port: Invalid Data Type.") << endmsg;
void
DummyAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
{
- if (!valid_port (port_handle)) {
- PBD::error << _("DummyBackend::unregister_port: Invalid Port.") << endmsg;
+ if (!_running) {
+ PBD::info << _("DummyBackend::unregister_port: Engine is not running.") << endmsg;
+ assert (!valid_port (port_handle));
+ return;
}
DummyPort* port = static_cast<DummyPort*>(port_handle);
std::vector<DummyPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<DummyPort*>(port_handle));
DummyAudioBackend::register_system_ports()
{
LatencyRange lr;
+ enum DummyAudioPort::GeneratorType gt;
+ if (_device == _("Uniform White Noise")) {
+ gt = DummyAudioPort::UniformWhiteNoise;
+ } else if (_device == _("Gaussian White Noise")) {
+ gt = DummyAudioPort::GaussianWhiteNoise;
+ } else if (_device == _("Pink Noise")) {
+ gt = DummyAudioPort::PinkNoise;
+ } else if (_device == _("Pink Noise (low CPU)")) {
+ gt = DummyAudioPort::PonyNoise;
+ } else if (_device == _("Sine Wave")) {
+ gt = DummyAudioPort::SineWave;
+ } else {
+ gt = DummyAudioPort::Silence;
+ }
const int a_ins = _n_inputs > 0 ? _n_inputs : 8;
const int a_out = _n_outputs > 0 ? _n_outputs : 8;
- const int m_ins = 2; // TODO
- const int m_out = 2;
+ const int m_ins = _n_midi_inputs > 0 ? _n_midi_inputs : 2;
+ const int m_out = _n_midi_outputs > 0 ? _n_midi_outputs : 2;
/* audio ports */
lr.min = lr.max = _samples_per_period + _systemic_input_latency;
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<DummyAudioPort*>(p));
+ static_cast<DummyAudioPort*>(p)->setup_generator (gt, _samplerate);
}
lr.min = lr.max = _samples_per_period + _systemic_output_latency;
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);
+ set_latency_range (p, true, lr);
}
/* midi ports */
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);
+ set_latency_range (p, true, lr);
}
-
return 0;
}
void
-DummyAudioBackend::unregister_system_ports()
+DummyAudioBackend::unregister_ports (bool system_only)
{
size_t i = 0;
+ _system_inputs.clear();
while (i < _ports.size ()) {
DummyPort* 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;
uint32_t
DummyAudioBackend::get_midi_event_count (void* port_buffer)
{
- assert (port_buffer && _running);
+ assert (port_buffer);
return static_cast<DummyMidiBuffer*>(port_buffer)->size ();
}
void
DummyAudioBackend::midi_clear (void* port_buffer)
{
- assert (port_buffer && _running);
+ assert (port_buffer);
DummyMidiBuffer * buf = static_cast<DummyMidiBuffer*>(port_buffer);
assert (buf);
buf->clear ();
{
for (size_t i = 0; i < _ports.size (); ++i) {
DummyPort* port = _ports[i];
- if ((port->type () == type) && port->is_output () && port->is_physical ()) {
+ if ((port->type () == type) && port->is_input () && port->is_physical ()) {
port_names.push_back (port->name ());
}
}
{
for (size_t i = 0; i < _ports.size (); ++i) {
DummyPort* port = _ports[i];
- if ((port->type () == type) && port->is_input () && port->is_physical ()) {
+ if ((port->type () == type) && port->is_output () && port->is_physical ()) {
port_names.push_back (port->name ());
}
}
void*
DummyAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
{
- assert (port && _running);
+ assert (port);
assert (valid_port (port));
return static_cast<DummyPort*>(port)->get_buffer (nframes);
}
_running = true;
_processed_samples = 0;
- struct timeval clock1, clock2;
- ::gettimeofday (&clock1, NULL);
+ manager.registration_callback();
+ manager.graph_order_callback();
+
+ uint64_t clock1, clock2;
+ clock1 = g_get_monotonic_time();
while (_running) {
+
+ // re-set input buffers, generate on demand.
+ for (std::vector<DummyAudioPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
+ (*it)->next_period();
+ }
+
if (engine.process_callback (_samples_per_period)) {
return 0;
}
_processed_samples += _samples_per_period;
if (!_freewheeling) {
- ::gettimeofday (&clock2, NULL);
- const int elapsed_time = (clock2.tv_sec - clock1.tv_sec) * 1000000 + (clock2.tv_usec - clock1.tv_usec);
- const int nomial_time = 1000000 * _samples_per_period / _samplerate;
+ clock2 = g_get_monotonic_time();
+ const int64_t elapsed_time = clock2 - clock1;
+ const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
_dsp_load = elapsed_time / (float) nomial_time;
if (elapsed_time < nomial_time) {
- ::usleep (nomial_time - elapsed_time);
+ Glib::usleep (nomial_time - elapsed_time);
} else {
- ::usleep (100); // don't hog cpu
+ Glib::usleep (100); // don't hog cpu
}
} else {
_dsp_load = 1.0;
- ::usleep (100); // don't hog cpu
+ Glib::usleep (100); // don't hog cpu
+ }
+ clock1 = g_get_monotonic_time();
+
+ 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);
+ _port_connection_queue.pop_back ();
+ delete c;
+ }
+ pthread_mutex_unlock (&_port_callback_mutex);
+ }
+ if (ports_changed) {
+ manager.registration_callback();
}
- ::gettimeofday (&clock1, NULL);
+ if (connections_changed) {
+ manager.graph_order_callback();
+ }
+ if (connections_changed || ports_changed) {
+ engine.latency_callback(false);
+ engine.latency_callback(true);
+ }
+
}
_running = false;
return 0;
static boost::shared_ptr<DummyAudioBackend> _instance;
+static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
+static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
+static int deinstantiate ();
+static bool already_configured ();
+
+static ARDOUR::AudioBackendInfo _descriptor = {
+ "Dummy",
+ instantiate,
+ deinstantiate,
+ backend_factory,
+ already_configured,
+};
+
static boost::shared_ptr<AudioBackend>
backend_factory (AudioEngine& e)
{
if (!_instance) {
- _instance.reset (new DummyAudioBackend (e));
+ _instance.reset (new DummyAudioBackend (e, _descriptor));
}
return _instance;
}
return false;
}
-static ARDOUR::AudioBackendInfo _descriptor = {
- "Dummy",
- instantiate,
- deinstantiate,
- backend_factory,
- already_configured,
-};
-
extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
{
return &_descriptor;
/******************************************************************************/
-DummyPort::DummyPort (const std::string& name, PortFlags flags)
- : _name (name)
+DummyPort::DummyPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
+ : _dummy_backend (b)
+ , _name (name)
, _flags (flags)
{
_capture_latency_range.min = 0;
_capture_latency_range.max = 0;
_playback_latency_range.min = 0;
_playback_latency_range.max = 0;
+ _dummy_backend.port_connect_add_remove_callback();
}
DummyPort::~DummyPort () {
disconnect_all ();
+ _dummy_backend.port_connect_add_remove_callback();
}
_connections.push_back (port);
if (callback) {
port->_connect (this, false);
+ _dummy_backend.port_connect_callback (name(), port->name(), true);
}
}
if (callback) {
port->_disconnect (this, false);
+ _dummy_backend.port_connect_callback (name(), port->name(), false);
}
}
{
while (!_connections.empty ()) {
_connections.back ()->_disconnect (this, false);
+ _dummy_backend.port_connect_callback (name(), _connections.back ()->name(), false);
_connections.pop_back ();
}
}
/******************************************************************************/
-DummyAudioPort::DummyAudioPort (const std::string& name, PortFlags flags)
- : DummyPort (name, flags)
+DummyAudioPort::DummyAudioPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
+ : DummyPort (b, name, flags)
+ , _gen_type (Silence)
+ , _gen_cycle (false)
+ , _b0 (0)
+ , _b1 (0)
+ , _b2 (0)
+ , _b3 (0)
+ , _b4 (0)
+ , _b5 (0)
+ , _b6 (0)
+ , _wavetable (0)
+ , _tbl_length (0)
+ , _tbl_offset (0)
+ , _pass (false)
+ , _rn1 (0)
{
memset (_buffer, 0, sizeof (_buffer));
}
-DummyAudioPort::~DummyAudioPort () { }
+DummyAudioPort::~DummyAudioPort () {
+ free(_wavetable);
+ _wavetable = 0;
+}
+
+void DummyAudioPort::setup_generator (GeneratorType const g, float const samplerate)
+{
+ _gen_type = g;
+ _rseed = g_get_monotonic_time() % UINT_MAX;
+
+ switch (_gen_type) {
+ case PinkNoise:
+ case PonyNoise:
+ case UniformWhiteNoise:
+ case GaussianWhiteNoise:
+ case Silence:
+ break;
+ case SineWave:
+ {
+ _tbl_length = 5 + randi() % (int)(samplerate / 20.f);
+ _wavetable = (Sample*) malloc( _tbl_length * sizeof(Sample));
+ for (uint32_t i = 0 ; i < _tbl_length; ++i) {
+ _wavetable[i] = .12589f * sinf(2.0 * M_PI * (float)i / (float)_tbl_length);
+ }
+ }
+ break;
+ }
+}
+
+inline uint32_t
+DummyAudioPort::randi ()
+{
+ // 31bit Park-Miller-Carta Pseudo-Random Number Generator
+ // http://www.firstpr.com.au/dsp/rand31/
+ uint32_t hi, lo;
+ lo = 16807 * (_rseed & 0xffff);
+ hi = 16807 * (_rseed >> 16);
+
+ lo += (hi & 0x7fff) << 16;
+ lo += hi >> 15;
+#if 1
+ lo = (lo & 0x7fffffff) + (lo >> 31);
+#else
+ if (lo > 0x7fffffff) { lo -= 0x7fffffff; }
+#endif
+ return (_rseed = lo);
+}
+
+inline float
+DummyAudioPort::randf ()
+{
+ return (randi() / 1073741824.f) - 1.f;
+}
+
+float DummyAudioPort::grandf ()
+{
+ // Gaussian White Noise
+ // http://www.musicdsp.org/archive.php?classid=0#109
+ float x1, x2, r;
+
+ if (_pass) {
+ _pass = false;
+ return _rn1;
+ }
+
+ do {
+ x1 = randf ();
+ x2 = randf ();
+ r = x1 * x1 + x2 * x2;
+ } while ((r >= 1.0f) || (r < 1e-22f));
+
+ r = sqrtf (-2.f * logf (r) / r);
+
+ _pass = true;
+ _rn1 = r * x2;
+ return r * x1;
+}
+
+void DummyAudioPort::generate (const pframes_t n_samples)
+{
+ Glib::Threads::Mutex::Lock lm (generator_lock);
+ if (_gen_cycle) {
+ return;
+ }
+
+ switch (_gen_type) {
+ case Silence:
+ memset (_buffer, 0, n_samples * sizeof (Sample));
+ break;
+ case SineWave:
+ assert(_wavetable && _tbl_length > 0);
+ {
+ pframes_t written = 0;
+ while (written < n_samples) {
+ const uint32_t remain = n_samples - written;
+ const uint32_t to_copy = std::min(remain, _tbl_length - _tbl_offset);
+ memcpy((void*)&_buffer[written],
+ (void*)&_wavetable[_tbl_offset],
+ to_copy * sizeof(Sample));
+ written += to_copy;
+ _tbl_offset = (_tbl_offset + to_copy) % _tbl_length;
+ }
+ }
+ break;
+ case UniformWhiteNoise:
+ for (pframes_t i = 0 ; i < n_samples; ++i) {
+ _buffer[i] = .158489f * randf();
+ }
+ break;
+ case GaussianWhiteNoise:
+ for (pframes_t i = 0 ; i < n_samples; ++i) {
+ _buffer[i] = .089125f * grandf();
+ }
+ break;
+ case PinkNoise:
+ for (pframes_t i = 0 ; i < n_samples; ++i) {
+ // Paul Kellet's refined method
+ // http://www.musicdsp.org/files/pink.txt
+ // NB. If 'white' consists of uniform random numbers,
+ // the pink noise will have an almost gaussian distribution.
+ const float white = .0498f * randf ();
+ _b0 = .99886f * _b0 + white * .0555179f;
+ _b1 = .99332f * _b1 + white * .0750759f;
+ _b2 = .96900f * _b2 + white * .1538520f;
+ _b3 = .86650f * _b3 + white * .3104856f;
+ _b4 = .55000f * _b4 + white * .5329522f;
+ _b5 = -.7616f * _b5 - white * .0168980f;
+ _buffer[i] = _b0 + _b1 + _b2 + _b3 + _b4 + _b5 + _b6 + white * 0.5362;
+ _b6 = white * 0.115926;
+ }
+ break;
+ case PonyNoise:
+ for (pframes_t i = 0 ; i < n_samples; ++i) {
+ const float white = 0.0498f * randf ();
+ // Paul Kellet's economy method
+ // http://www.musicdsp.org/files/pink.txt
+ _b0 = 0.99765 * _b0 + white * 0.0990460;
+ _b1 = 0.96300 * _b1 + white * 0.2965164;
+ _b2 = 0.57000 * _b2 + white * 1.0526913;
+ _buffer[i] = _b0 + _b1 + _b2 + white * 0.1848;
+ }
+ break;
+ }
+ _gen_cycle = true;
+}
void* DummyAudioPort::get_buffer (pframes_t n_samples)
{
if (it == get_connections ().end ()) {
memset (_buffer, 0, n_samples * sizeof (Sample));
} else {
- DummyAudioPort const * source = static_cast<const DummyAudioPort*>(*it);
+ DummyAudioPort * source = static_cast<DummyAudioPort*>(*it);
assert (source && source->is_output ());
+ if (source->is_physical() && source->is_terminal()) {
+ source->get_buffer(n_samples); // generate signal.
+ }
memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
while (++it != get_connections ().end ()) {
- source = static_cast<const DummyAudioPort*>(*it);
+ source = static_cast<DummyAudioPort*>(*it);
assert (source && source->is_output ());
Sample* dst = buffer ();
+ if (source->is_physical() && source->is_terminal()) {
+ source->get_buffer(n_samples); // generate signal.
+ }
const Sample* src = source->const_buffer ();
for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
*dst += *src;
}
}
} else if (is_output () && is_physical () && is_terminal()) {
- memset (_buffer, 0, n_samples * sizeof (Sample));
+ if (!_gen_cycle) {
+ generate(n_samples);
+ }
}
return _buffer;
}
-DummyMidiPort::DummyMidiPort (const std::string& name, PortFlags flags)
- : DummyPort (name, flags)
+DummyMidiPort::DummyMidiPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
+ : DummyPort (b, name, flags)
{
_buffer.clear ();
}
DummyMidiPort::~DummyMidiPort () { }
+struct MidiEventSorter {
+ bool operator() (const boost::shared_ptr<DummyMidiEvent>& a, const boost::shared_ptr<DummyMidiEvent>& b) {
+ return *a < *b;
+ }
+};
+
void* DummyMidiPort::get_buffer (pframes_t /* nframes */)
{
if (is_input ()) {
_buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
}
}
- std::sort (_buffer.begin (), _buffer.end ());
+ std::sort (_buffer.begin (), _buffer.end (), MidiEventSorter());
} else if (is_output () && is_physical () && is_terminal()) {
_buffer.clear ();
}
projects / ardour.git / blobdiff