Function sr_config_get

libsigrok4DSL/hwdriver.c:219–241

* Returns information about the given driver or device instance. * * @param driver The sr_dev_driver struct to query. * @param key The configuration key (SR_CONF_*). * @param data Pointer to a GVariant where the value will be stored. Must * not be NULL. The caller is given ownership of the GVariant * and must thus decrease the refcount after use. However if *

 *         as an indication that it's not applicable.
 */
SR_PRIV int sr_config_get(const struct sr_dev_driver *driver,
                         const struct sr_dev_inst *sdi,
                         const struct sr_channel *ch,
                         const struct sr_channel_group *cg,
                         int key, GVariant **data)
{
	int ret;

	if (!driver || !data)
		return SR_ERR;

	if (!driver->config_get)
		return SR_ERR_ARG;

    if ((ret = driver->config_get(key, data, sdi, ch, cg)) == SR_OK) {
		/* Got a floating reference from the driver. Sink it here,
		 * caller will need to unref when done with it. */
		assert(*data);
		g_variant_ref_sink(*data);
	}

	return ret;
}

/**
 * Set a configuration key in a device instance.