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105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/** Sample value remapping for mux.
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*
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* @file
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2019, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#pragma once
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#include <jansson.h>
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#include <villas/stats.h>
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#include <villas/common.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Forward declarations */
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struct node;
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struct sample;
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struct signal;
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struct vlist;
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enum mapping_type {
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MAPPING_TYPE_DATA,
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MAPPING_TYPE_STATS,
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MAPPING_TYPE_HEADER,
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MAPPING_TYPE_TIMESTAMP
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};
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enum mapping_header_type {
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MAPPING_HEADER_TYPE_LENGTH,
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MAPPING_HEADER_TYPE_SEQUENCE
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};
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enum mapping_timestamp_type {
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MAPPING_TIMESTAMP_TYPE_ORIGIN,
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MAPPING_TIMESTAMP_TYPE_RECEIVED
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};
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struct mapping_entry {
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struct node *node; /**< The node to which this mapping refers. */
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enum mapping_type type; /**< The mapping type. Selects one of the union fields below. */
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/** The number of values which is covered by this mapping entry.
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*
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* A value of 0 indicates that all remaining values starting from the offset of a sample should be mapped.
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*/
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int length;
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int offset; /**< Offset of this mapping entry within sample::data */
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union {
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struct {
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int offset;
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struct signal *signal;
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} data;
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struct {
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enum stats_metric metric;
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enum stats_type type;
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} stats;
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struct {
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enum mapping_header_type type;
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} header;
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struct {
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enum mapping_timestamp_type type;
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} timestamp;
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};
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};
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int mapping_remap(const struct vlist *m, struct sample *remapped, const struct sample *original, const struct stats *s);
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int mapping_update(const struct mapping_entry *e, struct sample *remapped, const struct sample *original, const struct stats *s);
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int mapping_parse(struct mapping_entry *e, json_t *cfg, struct vlist *nodes);
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int mapping_parse_str(struct mapping_entry *e, const char *str, struct vlist *nodes);
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int mapping_parse_list(struct vlist *l, json_t *cfg, struct vlist *nodes);
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int mapping_to_str(const struct mapping_entry *me, unsigned index, char **str);
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#ifdef __cplusplus
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}
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#endif
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