o->sdi->driver->config_get(SR_CONF_SAMPLERATE,
(const void **)&samplerate, o->sdi);
if (!(frequency_s = sr_samplerate_string(*samplerate))) {
o->sdi->driver->config_get(SR_CONF_SAMPLERATE,
(const void **)&samplerate, o->sdi);
if (!(frequency_s = sr_samplerate_string(*samplerate))) {