* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <math.h>
#include <sys/time.h>
#include <regex.h>
#include <stdlib.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;
{
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
engine.sample_rate_change (_samplerate);
engine.buffer_size_change (_samples_per_period);
- _dsp_load_calc.set_max_time (_samplerate, _samples_per_period);
-
if (engine.reestablish_ports ()) {
PBD::error << _("DummyAudioBackend: Could not re-establish ports.") << endmsg;
stop ();
bool
DummyAudioBackend::available () const
{
- return true;
+ return _running;
}
uint32_t
}
}
- for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++i) {
+ 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)) {
return;
}
DummyPort* port = static_cast<DummyPort*>(port_handle);
- PortIndex::iterator i = _ports.find (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;
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);
- static_cast<DummyMidiPort*>(p)->set_pretty_name (DummyMidiData::sequence_names[i % NUM_MIDI_EVENT_GENERATORS]);
+ 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);
+ }
}
}
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);
{
int n_midi = 0;
int n_audio = 0;
- for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++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 ()) {
{
int n_midi = 0;
int n_audio = 0;
- for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++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 ()) {
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) {
+ _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 ();
, _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) {
}
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 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)
_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