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-rw-r--r--libs/backends/dummy/dummy_audiobackend.cc17
1 files changed, 9 insertions, 8 deletions
diff --git a/libs/backends/dummy/dummy_audiobackend.cc b/libs/backends/dummy/dummy_audiobackend.cc
index 9e0583e97d..9d33d96636 100644
--- a/libs/backends/dummy/dummy_audiobackend.cc
+++ b/libs/backends/dummy/dummy_audiobackend.cc
@@ -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: