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VILLASnode/include/villas/mapping.h

103 lines
2.5 KiB
C

/** Sample value remapping for mux.
*
* @file
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
* @license GNU General Public License (version 3)
*
* VILLASnode
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************************/
#pragma once
#include <jansson.h>
#include <villas/stats.h>
#include <villas/common.h>
#include <villas/list.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Forward declarations */
struct stats;
struct node;
struct sample;
struct list;
struct mapping_entry {
struct node *node;
int offset; /**< Offset of this mapping entry within sample::data */
int length; /**< The number of values which is covered by this mapping entry. */
enum {
MAPPING_TYPE_DATA,
MAPPING_TYPE_STATS,
MAPPING_TYPE_HDR,
MAPPING_TYPE_TS
} type;
union {
struct {
int offset;
} data;
struct {
enum stats_id id;
enum stats_type {
MAPPING_STATS_TYPE_LAST,
MAPPING_STATS_TYPE_HIGHEST,
MAPPING_STATS_TYPE_LOWEST,
MAPPING_STATS_TYPE_MEAN,
MAPPING_STATS_TYPE_VAR,
MAPPING_STATS_TYPE_STDDEV,
MAPPING_STATS_TYPE_TOTAL
} type;
} stats;
struct {
enum header_type {
MAPPING_HDR_LENGTH,
MAPPING_HDR_SEQUENCE,
MAPPING_HDR_FORMAT
} id;
} hdr;
struct {
enum timestamp_type {
MAPPING_TS_ORIGIN,
MAPPING_TS_RECEIVED,
MAPPING_TS_SEND
} id;
} ts;
};
};
int mapping_remap(struct list *m, struct sample *remapped, struct sample *original, struct stats *s);
int mapping_update(struct mapping_entry *e, struct sample *remapped, struct sample *original, struct stats *s);
int mapping_parse(struct mapping_entry *e, json_t *cfg, struct list *nodes);
int mapping_parse_str(struct mapping_entry *e, const char *str, struct list *nodes);
int mapping_parse_list(struct list *l, json_t *cfg, struct list *nodes);
#ifdef __cplusplus
}
#endif