#include "dummy_midi_seq.h"
#include "pbd/error.h"
+#include "pbd/compose.h"
#include "ardour/port_manager.h"
#include "pbd/i18n.h"
_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
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")) {
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);
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) {
}
}
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;
/* 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 */
+ 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,
- HUGE, /* Big, non-inf number */
- INFINITY, /* +inf */
- -INFINITY, /* -inf */
- -NAN, /* -nan */
- NAN, /* nan */
- 0.0f, /* some silence to check for recovery */
+ 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)
}
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:
_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;
}
projects / ardour.git / blobdiff