- o->sdi->driver->config_get(SR_CONF_SAMPLERATE,
- (const void **)&samplerate, o->sdi);
- ctx->samplerate = *samplerate;
+ o->sdi->driver->config_get(SR_CONF_SAMPLERATE, &gvar, o->sdi);
+ ctx->samplerate = g_variant_get_uint64(gvar);
+ g_variant_unref(gvar);