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DummyBackend: allow changing SPP

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This commit is contained in:
Robin Gareus 2017-08-04 03:39:27 +02:00
parent cc4df34697
commit 4ec72b5c76
1 changed files with 9 additions and 8 deletions
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17
libs/backends/dummy/dummy_audiobackend.cc
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@ -184,7 +184,7 @@ DummyAudioBackend::available_output_channel_count (const std::string&) const
bool
DummyAudioBackend::can_change_sample_rate_when_running () const
{
return true;
return false;
}
bool
@ -457,8 +457,6 @@ DummyAudioBackend::_start (bool /*for_latency_measurement*/)
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 ();
@ -1307,6 +1305,7 @@ DummyAudioBackend::main_process_thread ()
int64_t clock1;
clock1 = -1;
while (_running) {
const size_t samples_per_period = _samples_per_period;
if (_freewheeling != _freewheel) {
_freewheel = _freewheeling;
@ -1321,17 +1320,17 @@ DummyAudioBackend::main_process_thread ()
(*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);
}
}
@ -1350,11 +1349,12 @@ DummyAudioBackend::main_process_thread ()
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 ();
@ -1987,7 +1987,8 @@ 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: