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fix gain mode caching 

As pointed out in https://osmocom.org/issues/5562 and previously
discussed in https://github.com/gqrx-sdr/gqrx/issues/979 the current
cache fails to set 0, because the first map lookup of the key that does
not exist (and is created by accessing it using operator[]) returns 0.
This commit is contained in:
Eric Wild 2023-10-29 16:50:05 +01:00
parent 8b33260d66
commit b581c621fe
2 changed files with 2 additions and 2 deletions
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2
lib/sink_impl.cc
View File

@ -410,7 +410,7 @@ bool sink_impl::set_gain_mode( bool automatic, size_t chan )
for (sink_iface *dev : _devs)
for (size_t dev_chan = 0; dev_chan < dev->get_num_channels(); dev_chan++)
if ( chan == channel++ ) {
if ( _gain_mode[ chan ] != automatic ) {
if ( (_gain_mode.count(chan) == 0) || (_gain_mode[ chan ] != automatic) ) {
_gain_mode[ chan ] = automatic;
bool mode = dev->set_gain_mode( automatic, dev_chan );
if (!automatic) // reapply gain value when switched to manual mode

2
lib/source_impl.cc
View File

@ -617,7 +617,7 @@ bool source_impl::set_gain_mode( bool automatic, size_t chan )
for (source_iface *dev : _devs)
for (size_t dev_chan = 0; dev_chan < dev->get_num_channels(); dev_chan++)
if ( chan == channel++ ) {
if ( _gain_mode[ chan ] != automatic ) {
if ( (_gain_mode.count(chan) == 0) || (_gain_mode[ chan ] != automatic) ) {
_gain_mode[ chan ] = automatic;
bool mode = dev->set_gain_mode( automatic, dev_chan );
if (!automatic) // reapply gain value when switched to manual mode