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Fix for half-duplex ALSA-slave devices

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This commit is contained in:
Robin Gareus 2019-08-23 04:39:51 +02:00
parent 8fadf44978
commit e5927d689c
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 5 additions and 2 deletions
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7
libs/backends/alsa/alsa_slave.cc
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@ -210,7 +210,7 @@ AlsaAudioSlave::process_thread ()
no_proc_errors = 0;
_pcmi.capt_init (spp);
if (drain) {
if (drain || _pcmi.ncapt () == 0) {
/* do nothing */
} else if (_rb_capture.write_space () >= _pcmi.ncapt () * spp) {
#if 0 // failsafe: write interleave sample by sample
@ -267,7 +267,10 @@ AlsaAudioSlave::process_thread ()
}
_pcmi.play_init (spp);
if (_rb_playback.read_space () >= _pcmi.nplay () * spp) {
if (_pcmi.nplay () == 0) {
/* relax */
}
else if (_rb_playback.read_space () >= _pcmi.nplay () * spp) {
#if 0 // failsafe: read sample by sample de-interleave
for (uint32_t s = 0; s < spp; ++s) {
for (uint32_t c = 0; c < _pcmi.nplay (); ++c) {