- /**
- * A short description of the output format. Must not be NULL.
- *
- * This can be displayed by frontends, e.g. when selecting the output
- * format for saving a file.
- */
- char *description;
-
- /**
- * This function is called once, at the beginning of an output stream.
- *
- * The device struct will be available in the output struct passed in,
- * as well as the param field -- which may be NULL or an empty string,
- * if no parameter was passed.
- *
- * The module can use this to initialize itself, create a struct for
- * keeping state and storing it in the <code>internal</code> field.
- *
- * @param o Pointer to the respective 'struct sr_output'.
- *
- * @retval SR_OK Success
- * @retval other Negative error code.
- */
- int (*init) (struct sr_output *o);
-
- /**
- * This function is passed a copy of every packed in the data feed.
- * Any output generated by the output module in response to the
- * packet should be returned in a newly allocated GString
- * <code>out</code>, which will be freed by the caller.
- *
- * Packets not of interest to the output module can just be ignored,
- * and the <code>out</code> parameter set to NULL.
- *
- * @param o Pointer to the respective 'struct sr_output'.
- * @param sdi The device instance that generated the packet.
- * @param packet The complete packet.
- * @param out A pointer where a GString * should be stored if
- * the module generates output, or NULL if not.
- *
- * @retval SR_OK Success
- * @retval other Negative error code.
- */
- int (*receive) (struct sr_output *o,
- const struct sr_datafeed_packet *packet, GString **out);
-
- /**
- * This function is called after the caller is finished using
- * the output module, and can be used to free any internal
- * resources the module may keep.
- *
- * @retval SR_OK Success
- * @retval other Negative error code.
- */
- int (*cleanup) (struct sr_output *o);