auto gvar = device->config_list(ConfigKey::LIMIT_SAMPLES);
g_variant_get(gvar.gobj(), "(tt)",
&min_sample_count, &max_sample_count);
auto gvar = device->config_list(ConfigKey::LIMIT_SAMPLES);
g_variant_get(gvar.gobj(), "(tt)",
&min_sample_count, &max_sample_count);