* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <math.h>
#include <sys/time.h>
#include <regex.h>
#include <stdlib.h>
#ifdef PLATFORM_WINDOWS
#include <windows.h>
+#include <pbd/windows_timer_utils.h>
#endif
#include "dummy_audiobackend.h"
#include "dummy_midi_seq.h"
#include "pbd/error.h"
+#include "pbd/compose.h"
#include "ardour/port_manager.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace ARDOUR;
std::vector<std::string> DummyAudioBackend::_midi_options;
std::vector<AudioBackend::DeviceStatus> DummyAudioBackend::_device_status;
-#ifdef PLATFORM_WINDOWS
-static double _win_pc_rate = 0; // usec per tick
-#endif
+std::vector<DummyAudioBackend::DriverSpeed> DummyAudioBackend::_driver_speed;
static int64_t _x_get_monotonic_usec() {
#ifdef PLATFORM_WINDOWS
- if (_win_pc_rate > 0) {
- LARGE_INTEGER Count;
- // not very reliable, but the only realistic way for sub milli-seconds
- if (QueryPerformanceCounter (&Count)) {
- return (int64_t) (Count.QuadPart * _win_pc_rate);
- }
- return -1;
- }
+ return PBD::get_microseconds();
#endif
return g_get_monotonic_time();
}
, _running (false)
, _freewheel (false)
, _freewheeling (false)
+ , _speedup (1.0)
, _device ("")
, _samplerate (48000)
, _samples_per_period (1024)
_instance_name = s_instance_name;
_device = _("Silence");
pthread_mutex_init (&_port_callback_mutex, 0);
+
+ if (_driver_speed.empty()) {
+ _driver_speed.push_back (DriverSpeed (_("Half Speed"), 2.0f));
+ _driver_speed.push_back (DriverSpeed (_("Normal Speed"), 1.0f));
+ _driver_speed.push_back (DriverSpeed (_("Double Speed"), 0.5f));
+ _driver_speed.push_back (DriverSpeed (_("5x Speed"), 0.2f));
+ _driver_speed.push_back (DriverSpeed (_("10x Speed"), 0.1f));
+ _driver_speed.push_back (DriverSpeed (_("15x Speed"), 0.06666f));
+ _driver_speed.push_back (DriverSpeed (_("20x Speed"), 0.05f));
+ _driver_speed.push_back (DriverSpeed (_("50x Speed"), 0.02f));
+ }
+
}
DummyAudioBackend::~DummyAudioBackend ()
std::string
DummyAudioBackend::name () const
{
- return X_("Dummy");
+ return X_("Dummy"); // internal name
}
bool
{
if (_device_status.empty()) {
_device_status.push_back (DeviceStatus (_("Silence"), true));
+ _device_status.push_back (DeviceStatus (_("DC -6dBFS (+.5)"), true));
+ _device_status.push_back (DeviceStatus (_("Demolition"), true));
_device_status.push_back (DeviceStatus (_("Sine Wave"), true));
+ _device_status.push_back (DeviceStatus (_("Sine Wave 1K, 1/3 Oct"), true));
_device_status.push_back (DeviceStatus (_("Square Wave"), true));
_device_status.push_back (DeviceStatus (_("Impulses"), true));
_device_status.push_back (DeviceStatus (_("Uniform White Noise"), true));
_device_status.push_back (DeviceStatus (_("Sine Sweep Swell"), true));
_device_status.push_back (DeviceStatus (_("Square Sweep"), true));
_device_status.push_back (DeviceStatus (_("Square Sweep Swell"), true));
+ _device_status.push_back (DeviceStatus (_("LTC"), true));
_device_status.push_back (DeviceStatus (_("Loopback"), true));
}
return _device_status;
bool
DummyAudioBackend::can_change_sample_rate_when_running () const
{
- return true;
+ return false;
}
bool
return true;
}
+std::vector<std::string>
+DummyAudioBackend::enumerate_drivers () const
+{
+ std::vector<std::string> speed_drivers;
+ for (std::vector<DriverSpeed>::const_iterator it = _driver_speed.begin () ; it != _driver_speed.end (); ++it) {
+ speed_drivers.push_back (it->name);
+ }
+ return speed_drivers;
+}
+
+std::string
+DummyAudioBackend::driver_name () const
+{
+ for (std::vector<DriverSpeed>::const_iterator it = _driver_speed.begin () ; it != _driver_speed.end (); ++it) {
+ if (rintf (1e6f * _speedup) == rintf (1e6f * it->speedup)) {
+ return it->name;
+ }
+ }
+ assert (0);
+ return _("Normal Speed");
+}
+
+int
+DummyAudioBackend::set_driver (const std::string& d)
+{
+ for (std::vector<DriverSpeed>::const_iterator it = _driver_speed.begin () ; it != _driver_speed.end (); ++it) {
+ if (d == it->name) {
+ _speedup = it->speedup;
+ return 0;
+ }
+ }
+ assert (0);
+ return -1;
+}
+
int
DummyAudioBackend::set_device_name (const std::string& d)
{
int
DummyAudioBackend::set_buffer_size (uint32_t bs)
{
- if (bs <= 0 || bs >= _max_buffer_size) {
+ if (bs <= 0 || bs > _max_buffer_size) {
return -1;
}
_samples_per_period = bs;
{
if (_running) {
PBD::error << _("DummyAudioBackend: already active.") << endmsg;
- return -1;
+ return BackendReinitializationError;
}
- if (_ports.size()) {
+ if (_ports.size () || _portmap.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) {
+ for (PortIndex::const_iterator it = _ports.begin (); it != _ports.end (); ++it) {
PBD::info << _("DummyAudioBackend: port '") << (*it)->name () << "' exists." << endmsg;
}
+ for (PortMap::const_iterator it = _portmap.begin (); it != _portmap.end (); ++it) {
+ PBD::info << _("DummyAudioBackend: portmap '") << (*it).first << "' exists." << endmsg;
+ }
_system_inputs.clear();
_system_outputs.clear();
_system_midi_in.clear();
_system_midi_out.clear();
_ports.clear();
+ _portmap.clear();
}
if (register_system_ports()) {
PBD::error << _("DummyAudioBackend: failed to register system ports.") << endmsg;
- return -1;
+ return PortRegistrationError;
}
engine.sample_rate_change (_samplerate);
if (engine.reestablish_ports ()) {
PBD::error << _("DummyAudioBackend: Could not re-establish ports.") << endmsg;
stop ();
- return -1;
+ return PortReconnectError;
}
engine.reconnect_ports ();
if (timeout == 0 || !_running) {
PBD::error << _("DummyAudioBackend: failed to start process thread.") << endmsg;
- return -1;
+ return ProcessThreadStartError;
}
- return 0;
+ return NoError;
}
int
bool
DummyAudioBackend::available () const
{
- return true;
+ return _running;
}
uint32_t
int
DummyAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
{
+ std::string newname (_instance_name + ":" + name);
+
if (!valid_port (port)) {
PBD::error << _("DummyBackend::set_port_name: Invalid Port(s)") << endmsg;
return -1;
}
- return static_cast<DummyPort*>(port)->set_name (_instance_name + ":" + name);
+
+ if (find_port (newname)) {
+ PBD::error << _("DummyBackend::set_port_name: Port with given name already exists") << endmsg;
+ return -1;
+ }
+
+ DummyPort* p = static_cast<DummyPort*>(port);
+ _portmap.erase (p->name());
+ _portmap.insert (make_pair (newname, p));
+ return p->set_name (newname);
}
std::string
return static_cast<DummyPort*>(port)->name ();
}
+int
+DummyAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const
+{
+ if (!valid_port (port)) {
+ PBD::warning << _("DummyBackend::get_port_property: Invalid Port(s)") << endmsg;
+ return -1;
+ }
+ if (key == "http://jackaudio.org/metadata/pretty-name") {
+ type = "";
+ value = static_cast<DummyPort*>(port)->pretty_name ();
+ if (!value.empty()) {
+ return 0;
+ }
+ }
+ return -1;
+}
+
+int
+DummyAudioBackend::set_port_property (PortHandle port, const std::string& key, const std::string& value, const std::string& type)
+{
+ if (!valid_port (port)) {
+ PBD::warning << _("DummyBackend::set_port_property: Invalid Port(s)") << endmsg;
+ return -1;
+ }
+ if (key == "http://jackaudio.org/metadata/pretty-name" && type.empty ()) {
+ static_cast<DummyPort*>(port)->set_pretty_name (value);
+ return 0;
+ }
+ return -1;
+}
+
PortEngine::PortHandle
DummyAudioBackend::get_port_by_name (const std::string& name) const
{
use_regexp = true;
}
}
- for (size_t i = 0; i < _ports.size (); ++i) {
- DummyPort* port = _ports[i];
- if ((port->type () == type) && (port->flags () & flags)) {
+
+ for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ DummyPort* 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;
}
return;
}
DummyPort* port = static_cast<DummyPort*>(port_handle);
- std::vector<DummyPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<DummyPort*>(port_handle));
+ PortIndex::iterator i = std::find (_ports.begin(), _ports.end(), static_cast<DummyPort*>(port_handle));
if (i == _ports.end ()) {
PBD::error << _("DummyBackend::unregister_port: Failed to find port") << endmsg;
return;
}
disconnect_all(port_handle);
+ _portmap.erase (port->name());
_ports.erase (i);
delete port;
}
gt = DummyAudioPort::PonyNoise;
} else if (_device == _("Sine Wave")) {
gt = DummyAudioPort::SineWave;
+ } else if (_device == _("Sine Wave 1K, 1/3 Oct")) {
+ gt = DummyAudioPort::SineWaveOctaves;
} else if (_device == _("Square Wave")) {
gt = DummyAudioPort::SquareWave;
} else if (_device == _("Impulses")) {
gt = DummyAudioPort::SquareSweep;
} else if (_device == _("Square Sweep Swell")) {
gt = DummyAudioPort::SquareSweepSwell;
+ } else if (_device == _("LTC")) {
+ gt = DummyAudioPort::LTC;
} else if (_device == _("Loopback")) {
gt = DummyAudioPort::Loopback;
+ } else if (_device == _("Demolition")) {
+ gt = DummyAudioPort::Demolition;
+ } else if (_device == _("DC -6dBFS (+.5)")) {
+ gt = DummyAudioPort::DC05;
} else {
gt = DummyAudioPort::Silence;
}
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);
+ std::string name = static_cast<DummyAudioPort*>(p)->setup_generator (gt, _samplerate, i - 1, a_ins);
+ if (!name.empty ()) {
+ static_cast<DummyAudioPort*>(p)->set_pretty_name (name);
+ }
}
lr.min = lr.max = _systemic_output_latency;
set_latency_range (p, false, lr);
_system_midi_in.push_back (static_cast<DummyMidiPort*>(p));
if (_midi_mode == MidiGenerator) {
- static_cast<DummyMidiPort*>(p)->setup_generator (i % NUM_MIDI_EVENT_GENERATORS, _samplerate);
+ std::string name = static_cast<DummyMidiPort*>(p)->setup_generator (i % NUM_MIDI_EVENT_GENERATORS, _samplerate);
+ if (!name.empty ()) {
+ static_cast<DummyMidiPort*>(p)->set_pretty_name (name);
+ }
}
}
if (!p) return -1;
set_latency_range (p, true, lr);
_system_midi_out.push_back (static_cast<DummyMidiPort*>(p));
+
+ if (_device == _("Loopback") && _midi_mode == MidiToAudio) {
+ std::stringstream ss;
+ ss << "Midi2Audio";
+ for (int apc = 0; apc < (int)_system_inputs.size(); ++apc) {
+ if ((apc % m_out) + 1 == i) {
+ ss << " >" << (apc + 1);
+ }
+ }
+ static_cast<DummyMidiPort*>(p)->set_pretty_name (ss.str());
+ }
}
return 0;
}
_system_midi_in.clear();
_system_midi_out.clear();
- for (std::vector<DummyPort*>::iterator i = _ports.begin (); i != _ports.end ();) {
- DummyPort* port = *i;
+ for (PortIndex::iterator i = _ports.begin (); i != _ports.end ();) {
+ PortIndex::iterator cur = i++;
+ DummyPort* port = *cur;
if (! system_only || (port->is_physical () && port->is_terminal ())) {
port->disconnect_all ();
+ _portmap.erase (port->name());
delete port;
- i = _ports.erase (i);
- } else {
- ++i;
+ _ports.erase (cur);
}
}
}
DummyAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
{
DummyPort* dst_port = find_port (dst);
+#ifndef NDEBUG
if (!valid_port (src) || !dst_port) {
PBD::error << _("DummyBackend::connected_to: Invalid Port") << endmsg;
return false;
}
+#endif
return static_cast<DummyPort*>(src)->is_connected (dst_port);
}
assert (0 == names.size ());
- const std::vector<DummyPort*>& connected_ports = static_cast<DummyPort*>(port)->get_connections ();
+ const std::set<DummyPort*>& connected_ports = static_cast<DummyPort*>(port)->get_connections ();
- for (std::vector<DummyPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
+ for (std::set<DummyPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
names.push_back ((*i)->name ());
}
int
DummyAudioBackend::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);
DummyMidiBuffer& dst = * static_cast<DummyMidiBuffer*>(port_buffer);
if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
// nevermind, ::get_buffer() sorts events, but always print warning
- fprintf (stderr, "DummyMidiBuffer: it's too late for this event.\n");
+ fprintf (stderr, "DummyMidiBuffer: it's too late for this event %d > %d.\n", (pframes_t)dst.back ()->timestamp (), timestamp);
}
dst.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (timestamp, buffer, size)));
+#if 0 // DEBUG MIDI EVENTS
+ printf("DummyAudioBackend::midi_event_put %d, %zu: ", timestamp, size);
+ for (size_t xx = 0; xx < size; ++xx) {
+ printf(" %02x", buffer[xx]);
+ }
+ printf("\n");
+#endif
return 0;
}
void
DummyAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
{
- for (size_t i = 0; i < _ports.size (); ++i) {
- DummyPort* port = _ports[i];
+ for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ DummyPort* port = *i;
if ((port->type () == type) && port->is_input () && port->is_physical ()) {
port_names.push_back (port->name ());
}
void
DummyAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
{
- for (size_t i = 0; i < _ports.size (); ++i) {
- DummyPort* port = _ports[i];
+ for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ DummyPort* 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) {
- DummyPort* port = _ports[i];
+ for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ DummyPort* 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) {
- DummyPort* port = _ports[i];
+ for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ DummyPort* port = *i;
if (port->is_input () && port->is_physical ()) {
switch (port->type ()) {
case DataType::AUDIO: ++n_audio; break;
manager.registration_callback();
manager.graph_order_callback();
- int64_t clock1, clock2;
- clock1 = _x_get_monotonic_usec();
+ int64_t clock1;
+ clock1 = -1;
while (_running) {
+ const size_t samples_per_period = _samples_per_period;
if (_freewheeling != _freewheel) {
_freewheel = _freewheeling;
(*it)->next_period();
}
- if (engine.process_callback (_samples_per_period)) {
+ if (engine.process_callback (samples_per_period)) {
return 0;
}
- _processed_samples += _samples_per_period;
+ _processed_samples += samples_per_period;
if (_device == _("Loopback") && _midi_mode != MidiToAudio) {
int opn = 0;
int opc = _system_outputs.size();
for (std::vector<DummyAudioPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++opn) {
DummyAudioPort* op = _system_outputs[(opn % opc)];
- (*it)->fill_wavetable ((const float*)op->get_buffer (_samples_per_period), _samples_per_period);
+ (*it)->fill_wavetable ((const float*)op->get_buffer (samples_per_period), samples_per_period);
}
}
for (std::vector<DummyAudioPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++opn) {
DummyMidiPort* op = _system_midi_out[(opn % opc)];
op->get_buffer(0); // mix-down
- (*it)->midi_to_wavetable (op->const_buffer(), _samples_per_period);
+ (*it)->midi_to_wavetable (op->const_buffer(), samples_per_period);
}
}
if (!_freewheel) {
- const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
- clock2 = _x_get_monotonic_usec();
-#ifdef PLATFORM_WINDOWS
- bool win_timers_ok = true;
- /* querying the performance counter can fail occasionally (-1).
- * Also on some multi-core systems, timers are CPU specific and not
- * synchronized. We assume they differ more than a few milliseconds
- * (4 * nominal cycle time) and simply ignore cases where the
- * execution switches cores.
- */
- if (clock1 < 0 || clock2 < 0 || (clock1 > clock2) || (clock2 - clock1) > 4 * nomial_time) {
- clock2 = clock1 = 0;
- win_timers_ok = false;
- }
-#endif
- const int64_t elapsed_time = clock2 - clock1;
-#ifdef PLATFORM_WINDOWS
- if (win_timers_ok)
-#endif
- { // low pass filter
- _dsp_load = _dsp_load + .05 * ((elapsed_time / (float) nomial_time) - _dsp_load) + 1e-12;
- }
-
- if (elapsed_time < nomial_time) {
- Glib::usleep (nomial_time - elapsed_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 (_x_get_monotonic_usec());
+ _dsp_load = _dsp_load_calc.get_dsp_load_unbound ();
+
+ const int64_t elapsed_time = _dsp_load_calc.elapsed_time_us ();
+ const int64_t nominal_time = _dsp_load_calc.get_max_time_us ();
+ if (elapsed_time < nominal_time) {
+ const int64_t sleepy = _speedup * (nominal_time - elapsed_time);
+ Glib::usleep (std::max ((int64_t) 100, sleepy));
} else {
Glib::usleep (100); // don't hog cpu
}
Glib::usleep (100); // don't hog cpu
}
- /* beginning of netx cycle */
+ /* beginning of next cycle */
clock1 = _x_get_monotonic_usec();
bool connections_changed = false;
static bool available ();
static ARDOUR::AudioBackendInfo _descriptor = {
- "Dummy",
+ _("None (Dummy)"),
instantiate,
deinstantiate,
backend_factory,
instantiate (const std::string& arg1, const std::string& /* arg2 */)
{
s_instance_name = arg1;
-#ifdef PLATFORM_WINDOWS
- LARGE_INTEGER Frequency;
- if (!QueryPerformanceFrequency(&Frequency) || Frequency.QuadPart < 1) {
- _win_pc_rate = 0;
- } else {
- _win_pc_rate = 1000000.0 / Frequency.QuadPart;
- }
-#endif
return 0;
}
static bool
already_configured ()
{
- if (_instance) {
- return _instance->is_running();
+ // special-case: unit-tests require backend to be pre-configured.
+ if (s_instance_name == "Unit-Test") {
+ return true;
}
return false;
}
void DummyPort::_connect (DummyPort *port, bool callback)
{
- _connections.push_back (port);
+ _connections.insert (port);
if (callback) {
port->_connect (this, false);
_dummy_backend.port_connect_callback (name(), port->name(), true);
void DummyPort::_disconnect (DummyPort *port, bool callback)
{
- std::vector<DummyPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
-
+ std::set<DummyPort*>::iterator it = _connections.find (port);
assert (it != _connections.end ());
-
_connections.erase (it);
-
if (callback) {
port->_disconnect (this, false);
_dummy_backend.port_connect_callback (name(), port->name(), false);
void DummyPort::disconnect_all ()
{
while (!_connections.empty ()) {
- _connections.back ()->_disconnect (this, false);
- _dummy_backend.port_connect_callback (name(), _connections.back ()->name(), false);
- _connections.pop_back ();
+ std::set<DummyPort*>::iterator it = _connections.begin ();
+ (*it)->_disconnect (this, false);
+ _dummy_backend.port_connect_callback (name(), (*it)->name(), false);
+ _connections.erase (it);
}
}
bool
DummyPort::is_connected (const DummyPort *port) const
{
- return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
+ return _connections.find (const_cast<DummyPort *>(port)) != _connections.end ();
}
bool DummyPort::is_physically_connected () const
{
- for (std::vector<DummyPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
+ for (std::set<DummyPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
if ((*it)->is_physical ()) {
return true;
}
_rseed = g_get_monotonic_time() % UINT_MAX;
}
_rseed = (_rseed + (uint64_t)this) % UINT_MAX;
+ if (_rseed == 0) _rseed = 1;
}
inline uint32_t
, _gen_count2 (0)
, _pass (false)
, _rn1 (0)
+ , _ltc (0)
+ , _ltcbuf (0)
{
memset (_buffer, 0, sizeof (_buffer));
}
DummyAudioPort::~DummyAudioPort () {
free(_wavetable);
+ ltc_encoder_free (_ltc);
+ delete _ltcbuf;
_wavetable = 0;
+ _ltc = 0;
+ _ltcbuf = 0;
+}
+
+static std::string format_hz (float freq) {
+ std::stringstream ss;
+ if (freq >= 10000) {
+ ss << std::setprecision (1) << std::fixed << freq / 1000 << "kHz";
+ } else if (freq >= 1000) {
+ ss << std::setprecision (2) << std::fixed << freq / 1000 << "kHz";
+ } else {
+ ss << std::setprecision (1) << std::fixed << freq << "Hz";
+ }
+ return ss.str ();
+}
+
+static size_t fit_wave (float freq, float rate, float precision = 0.001) {
+ const size_t max_mult = floor (freq * rate);
+ float minErr = 2;
+ size_t fact = 1;
+ for (size_t i = 1; i < max_mult; ++i) {
+ const float isc = rate * (float)i / freq; // ideal sample count
+ const float rsc = rintf (isc); // rounded sample count
+ const float err = fabsf (isc - rsc);
+ if (err < minErr) {
+ minErr = err;
+ fact = i;
+ }
+ if (err < precision) {
+ break;
+ }
+ }
+ //printf(" FIT %8.1f Hz / %8.1f Hz * %ld = %.0f (err: %e)\n", freq, rate, fact, fact * rate / freq, minErr);
+ return fact;
}
-void DummyAudioPort::setup_generator (GeneratorType const g, float const samplerate)
+std::string
+DummyAudioPort::setup_generator (GeneratorType const g, float const samplerate, int c, int total)
{
+ std::string name;
DummyPort::setup_random_number_generator();
_gen_type = g;
case PonyNoise:
case UniformWhiteNoise:
case GaussianWhiteNoise:
+ case DC05:
case Silence:
break;
+ case Demolition:
+ _gen_period = 3 * samplerate;
+ break;
case KronekerDelta:
_gen_period = (5 + randi() % (int)(samplerate / 20.f));
+ name = "Delta " + format_hz (samplerate / _gen_period);
break;
case SquareWave:
_gen_period = (5 + randi() % (int)(samplerate / 20.f)) & ~1;
+ name = "Square " + format_hz (samplerate / _gen_period);
+ break;
+ case SineWaveOctaves:
+ {
+ const int x = c - floor (((float)total / 2));
+ float f = powf (2.f, x / 3.f) * 1000.f;
+ f = std::max (10.f, std::min (samplerate *.5f, f));
+ const size_t mult = fit_wave (f, samplerate);
+ _gen_period = rintf ((float)mult * samplerate / f);
+ name = "Sine " + format_hz (samplerate * mult / (float)_gen_period);
+ _wavetable = (Sample*) malloc (_gen_period * sizeof(Sample));
+ for (uint32_t i = 0 ; i < _gen_period; ++i) {
+ _wavetable[i] = .12589f * sinf(2.0f * M_PI * (float)mult * (float)i / (float)(_gen_period)); // -18dBFS
+ }
+ }
break;
case SineWave:
_gen_period = 5 + randi() % (int)(samplerate / 20.f);
+ name = "Sine " + format_hz (samplerate / _gen_period);
_wavetable = (Sample*) malloc (_gen_period * sizeof(Sample));
for (uint32_t i = 0 ; i < _gen_period; ++i) {
_wavetable[i] = .12589f * sinf(2.0f * M_PI * (float)i / (float)_gen_period); // -18dBFS
}
}
break;
+ case LTC:
+ switch (c % 4) {
+ case 0:
+ _ltc = ltc_encoder_create (samplerate, 25, LTC_TV_625_50, 0);
+ name = "LTC25";
+ break;
+ case 1:
+ _ltc = ltc_encoder_create (samplerate, 30, LTC_TV_1125_60, 0);
+ name = "LTC30";
+ break;
+ case 2:
+ _ltc = ltc_encoder_create (samplerate, 30001.f / 1001.f, LTC_TV_525_60, 0);
+ name = "LTC29df";
+ break;
+ case 3:
+ _ltc = ltc_encoder_create (samplerate, 24, LTC_TV_FILM_24, 0);
+ name = "LTC24";
+ break;
+ }
+ _ltc_spd = 1.0;
+ _ltc_rand = floor((float)c / 4) * .001f;
+ if (c < 4) {
+ name += " (locked)";
+ } else {
+ name += " (varspd)";
+ }
+ SMPTETimecode tc;
+ tc.years = 0;
+ tc.months = 0;
+ tc.days = 0;
+ tc.hours = (3 * (c / 4)) % 24; // XXX
+ tc.mins = 0;
+ tc.secs = 0;
+ tc.frame = 0;
+ ltc_encoder_set_timecode (_ltc, &tc);
+ name += string_compose ("@%1h", (int)tc.hours);
+ _ltcbuf = new RingBuffer<Sample> (std::max (DummyAudioBackend::max_buffer_size() * 2.f, samplerate));
+ break;
case Loopback:
_wavetable = (Sample*) malloc (DummyAudioBackend::max_buffer_size() * sizeof(Sample));
break;
}
+ return name;
}
void DummyAudioPort::midi_to_wavetable (DummyMidiBuffer const * const src, size_t n_samples)
return r * x1;
}
+/* inspired by jack-demolition by Steve Harris */
+static const float _demolition[] = {
+ 0.0f, /* special case - 0dbFS white noise */
+ 0.0f, /* zero, may cause denomrals following a signal */
+ 0.73 / 1e45, /* very small - should be denormal when floated */
+ 3.7f, /* arbitrary number > 0dBFS */
+ -4.3f, /* arbitrary negative number > 0dBFS */
+ 4294967395.0f, /* 2^16 + 100 */
+ -4294967395.0f,
+ 3.402823466e+38F, /* HUGE, HUGEVALF, non-inf number */
+ INFINITY, /* +inf */
+ -INFINITY, /* -inf */
+ -NAN, /* -nan */
+ NAN, /* nan */
+ 0.0f, /* some silence to check for recovery */
+};
+
void DummyAudioPort::generate (const pframes_t n_samples)
{
Glib::Threads::Mutex::Lock lm (generator_lock);
case Silence:
memset (_buffer, 0, n_samples * sizeof (Sample));
break;
+ case DC05:
+ for (pframes_t i = 0 ; i < n_samples; ++i) {
+ _buffer[i] = 0.5f;
+ }
+ break;
+ case Demolition:
+ switch (_gen_count2) {
+ case 0: // noise
+ for (pframes_t i = 0 ; i < n_samples; ++i) {
+ _buffer[i] = randf();
+ }
+ break;
+ default:
+ for (pframes_t i = 0 ; i < n_samples; ++i) {
+ _buffer[i] = _demolition [_gen_count2];
+ }
+ break;
+ }
+ _gen_offset += n_samples;
+ if (_gen_offset > _gen_period) {
+ _gen_offset = 0;
+ _gen_count2 = (_gen_count2 + 1) % (sizeof (_demolition) / sizeof (float));
+ }
+ break;
case SquareWave:
assert(_gen_period > 0);
for (pframes_t i = 0 ; i < n_samples; ++i) {
{
const float vols = 2.f / (float)_gen_perio2;
for (pframes_t i = 0; i < n_samples; ++i) {
- const float g = fabsf (_gen_count2 * vols - 1.0);
+ const float g = fabsf (_gen_count2 * vols - 1.f);
_buffer[i] = g * _wavetable[_gen_offset];
_gen_offset = (_gen_offset + 1) % _gen_period;
_gen_count2 = (_gen_count2 + 1) % _gen_perio2;
}
break;
case Loopback:
- _gen_period = n_samples; // XXX DummyBackend::_samples_per_period;
+ memcpy((void*)_buffer, (void*)_wavetable, n_samples * sizeof(Sample));
+ break;
case SineWave:
+ case SineWaveOctaves:
case SineSweep:
case SquareSweep:
assert(_wavetable && _gen_period > 0);
_buffer[i] = _b0 + _b1 + _b2 + white * 0.1848f;
}
break;
+ case LTC:
+ while (_ltcbuf->read_space () < n_samples) {
+ // we should pre-allocate (or add a zero-copy libltc API), whatever.
+ ltcsnd_sample_t* enc_buf = (ltcsnd_sample_t*) malloc (ltc_encoder_get_buffersize (_ltc) * sizeof (ltcsnd_sample_t));
+ for (int byteCnt = 0; byteCnt < 10; byteCnt++) {
+ if (_ltc_rand != 0.f) {
+ _ltc_spd += randf () * _ltc_rand;
+ _ltc_spd = std::min (1.5f, std::max (0.5f, _ltc_spd));
+ }
+ ltc_encoder_encode_byte (_ltc, byteCnt, _ltc_spd);
+ const int len = ltc_encoder_get_buffer (_ltc, enc_buf);
+ for (int i = 0; i < len; ++i) {
+ const float v1 = enc_buf[i] - 128;
+ Sample v = v1 * 0.002;
+ _ltcbuf->write (&v, 1);
+ }
+ }
+ ltc_encoder_inc_timecode (_ltc);
+ free (enc_buf);
+ }
+ _ltcbuf->read (_buffer, n_samples);
+ break;
}
_gen_cycle = true;
}
void* DummyAudioPort::get_buffer (pframes_t n_samples)
{
if (is_input ()) {
- std::vector<DummyPort*>::const_iterator it = get_connections ().begin ();
- if (it == get_connections ().end ()) {
+ const std::set<DummyPort *>& connections = get_connections ();
+ std::set<DummyPort*>::const_iterator it = connections.begin ();
+ if (it == connections.end ()) {
memset (_buffer, 0, n_samples * sizeof (Sample));
} else {
DummyAudioPort * source = static_cast<DummyAudioPort*>(*it);
source->get_buffer(n_samples); // generate signal.
}
memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
- while (++it != get_connections ().end ()) {
+ while (++it != connections.end ()) {
source = static_cast<DummyAudioPort*>(*it);
assert (source && source->is_output ());
Sample* dst = buffer ();
}
}
-void DummyMidiPort::setup_generator (int seq_id, const float sr)
+std::string
+DummyMidiPort::setup_generator (int seq_id, const float sr)
{
DummyPort::setup_random_number_generator();
_midi_seq_dat = DummyMidiData::sequences[seq_id % NUM_MIDI_EVENT_GENERATORS];
_midi_seq_spb = sr * .5f; // 120 BPM, beat_time 1.0 per beat.
_midi_seq_pos = 0;
_midi_seq_time = 0;
+ return DummyMidiData::sequence_names[seq_id];
}
void DummyMidiPort::midi_generate (const pframes_t n_samples)
{
if (is_input ()) {
_buffer.clear ();
- for (std::vector<DummyPort*>::const_iterator i = get_connections ().begin ();
- i != get_connections ().end ();
+ const std::set<DummyPort*>& connections = get_connections ();
+ for (std::set<DummyPort*>::const_iterator i = connections.begin ();
+ i != connections.end ();
++i) {
DummyMidiPort * source = static_cast<DummyMidiPort*>(*i);
if (source->is_physical() && source->is_terminal()) {
_buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
}
}
- std::sort (_buffer.begin (), _buffer.end (), MidiEventSorter());
+ std::stable_sort (_buffer.begin (), _buffer.end (), MidiEventSorter());
} else if (is_output () && is_physical () && is_terminal()) {
if (!_gen_cycle) {
midi_generate(n_samples);
projects / ardour.git / blobdiff