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Fix reduced channelcount when restarting engine with different device

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1. Start engine with a stereo soundcard (n_inputs was set to 2)
2. Restart engine with multi-channel soundcard, n_inputs remained a 2)
This commit is contained in:
Robin Gareus 2024-07-10 15:37:34 +02:00
parent d6b14e761b
commit ab0d2dce6f
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GPG key ID: A090BCE02CF57F04
6 changed files with 6 additions and 66 deletions
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24
libs/backends/alsa/alsa_audiobackend.cc
View file

@ -71,8 +71,6 @@ AlsaAudioBackend::AlsaAudioBackend (AudioEngine& e, AudioBackendInfo& info)
, _samplerate (48000)
, _samples_per_period (1024)
, _periods_per_cycle (2)
, _n_inputs (0)
, _n_outputs (0)
, _systemic_audio_input_latency (0)
, _systemic_audio_output_latency (0)
, _midi_device_thread_active (false)
@ -919,24 +917,6 @@ AlsaAudioBackend::_start (bool for_latency_measurement)
}
#endif
if (_n_outputs != _pcmi->nplay ()) {
if (_n_outputs == 0) {
_n_outputs = _pcmi->nplay ();
} else {
_n_outputs = std::min (_n_outputs, _pcmi->nplay ());
}
PBD::info << _("AlsaAudioBackend: adjusted output channel count to match device.") << endmsg;
}
if (_n_inputs != _pcmi->ncapt ()) {
if (_n_inputs == 0) {
_n_inputs = _pcmi->ncapt ();
} else {
_n_inputs = std::min (_n_inputs, _pcmi->ncapt ());
}
PBD::info << _("AlsaAudioBackend: adjusted input channel count to match device.") << endmsg;
}
if (_pcmi->fsize () != _samples_per_period) {
_samples_per_period = _pcmi->fsize ();
PBD::warning << string_compose (_("AlsaAudioBackend: samples per period does not match, using %1."), _samples_per_period) << endmsg;
@ -1246,8 +1226,8 @@ AlsaAudioBackend::register_system_audio_ports ()
{
LatencyRange lr;
const int a_ins = _n_inputs;
const int a_out = _n_outputs;
const int a_ins = _pcmi->ncapt ();
const int a_out = _pcmi->nplay ();
const uint32_t lcpp = (_periods_per_cycle - 2) * _samples_per_period;

3
libs/backends/alsa/alsa_audiobackend.h
View file

@ -302,9 +302,6 @@ class AlsaAudioBackend : public AudioBackend, public PortEngineSharedImpl
size_t _periods_per_cycle;
static size_t _max_buffer_size;
uint32_t _n_inputs;
uint32_t _n_outputs;
uint32_t _systemic_audio_input_latency;
uint32_t _systemic_audio_output_latency;