Mirrors/VILLASnode
1
0
Fork 0
mirror of https://git.rwth-aachen.de/acs/public/villas/node/ synced 2025-03-16 00:00:02 +01:00
Code Issues Releases Wiki Activity
VILLASnode/lib/signal.c

578 lines
10 KiB
C
Raw Blame History

/** Signal meta data.
*
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2017-2018, 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/>.
*********************************************************************************/
#include <string.h>
#include <inttypes.h>
#include <villas/signal.h>
#include <villas/list.h>
#include <villas/utils.h>
#include <villas/node.h>
#include <villas/mapping.h>
int signal_init(struct signal *s)
{
s->enabled = true;
s->name = NULL;
s->unit = NULL;
s->type = SIGNAL_TYPE_AUTO;
s->refcnt = ATOMIC_VAR_INIT(1);
return 0;
}
int signal_init_from_mapping(struct signal *s, const struct mapping_entry *me, unsigned index)
{
int ret;
ret = signal_init(s);
if (ret)
return ret;
ret = mapping_to_str(me, index, &s->name);
if (ret)
return ret;
switch (me->type) {
case MAPPING_TYPE_STATS:
switch (me->stats.type) {
case MAPPING_STATS_TYPE_TOTAL:
s->type = SIGNAL_TYPE_INTEGER;
break;
case MAPPING_STATS_TYPE_LAST:
case MAPPING_STATS_TYPE_LOWEST:
case MAPPING_STATS_TYPE_HIGHEST:
case MAPPING_STATS_TYPE_MEAN:
case MAPPING_STATS_TYPE_VAR:
case MAPPING_STATS_TYPE_STDDEV:
s->type = SIGNAL_TYPE_FLOAT;
break;
}
break;
case MAPPING_TYPE_HEADER:
switch (me->header.type) {
case MAPPING_HEADER_TYPE_LENGTH:
case MAPPING_HEADER_TYPE_SEQUENCE:
s->type = SIGNAL_TYPE_INTEGER;
break;
}
break;
case MAPPING_TYPE_TIMESTAMP:
s->type = SIGNAL_TYPE_INTEGER;
break;
case MAPPING_TYPE_DATA:
*s = *me->data.signal;
break;
}
return 0;
}
int signal_destroy(struct signal *s)
{
if (s->name)
free(s->name);
if (s->unit)
free(s->unit);
return 0;
}
struct signal * signal_create(const char *name, const char *unit, enum signal_type fmt)
{
int ret;
struct signal *sig;
sig = alloc(sizeof(struct signal));
if (!sig)
return NULL;
ret = signal_init(sig);
if (ret)
return NULL;
if (name)
sig->name = strdup(name);
if (unit)
sig->unit = strdup(unit);
sig->type = fmt;
return sig;
}
int signal_free(struct signal *s)
{
int ret;
ret = signal_destroy(s);
if (ret)
return ret;
free(s);
return 0;
}
int signal_incref(struct signal *s)
{
return atomic_fetch_add(&s->refcnt, 1) + 1;
}
int signal_decref(struct signal *s)
{
int prev = atomic_fetch_sub(&s->refcnt, 1);
/* Did we had the last reference? */
if (prev == 1)
signal_free(s);
return prev - 1;
}
struct signal * signal_copy(struct signal *s)
{
struct signal *ns;
ns = alloc(sizeof(struct signal));
if (!ns)
return NULL;
signal_init(ns);
ns->type = s->type;
ns->init = s->init;
ns->enabled = s->enabled;
if (s->name)
ns->name = strdup(s->name);
if (s->unit)
ns->name = strdup(s->unit);
return ns;
}
int signal_parse(struct signal *s, json_t *cfg)
{
int ret;
json_error_t err;
json_t *json_init = NULL;
const char *name = NULL;
const char *unit = NULL;
const char *type = NULL;
ret = json_unpack_ex(cfg, &err, 0, "{ s?: s, s?: s, s?: s, s?: o, s?: b }",
"name", &name,
"unit", &unit,
"type", &type,
"init", &json_init,
"enabled", &s->enabled
);
if (ret)
return -1;
if (name)
s->name = strdup(name);
if (unit)
s->unit = strdup(unit);
if (type) {
s->type = signal_type_from_str(type);
if (s->type == SIGNAL_TYPE_INVALID)
return -1;
}
if (json_init) {
ret = signal_data_parse_json(&s->init, s, json_init);
if (ret)
return ret;
}
else
signal_data_set(&s->init, s, 0);
return 0;
}
/* Signal list */
int signal_list_parse(struct list *list, json_t *cfg)
{
int ret;
struct signal *s;
if (!json_is_array(cfg))
return -1;
size_t i;
json_t *json_signal;
json_array_foreach(cfg, i, json_signal) {
s = alloc(sizeof(struct signal));
if (!s)
return -1;
ret = signal_init(s);
if (ret)
return ret;
ret = signal_parse(s, json_signal);
if (ret)
return ret;
list_push(list, s);
}
return 0;
}
int signal_list_generate(struct list *list, unsigned len, enum signal_type fmt)
{
for (int i = 0; i < len; i++) {
char name[32];
snprintf(name, sizeof(name), "signal%d", i);
struct signal *sig = signal_create(name, NULL, fmt);
if (!sig)
return -1;
list_push(list, sig);
}
return 0;
}
void signal_list_dump(const struct list *list)
{
info ("Signals:");
for (int i = 0; i < list_length(list); i++) {
struct signal *sig = list_at(list, i);
if (sig->unit)
info(" %d: %s [%s] = %s", i, sig->name, sig->unit, signal_type_to_str(sig->type));
else
info(" %d: %s = %s", i, sig->name, signal_type_to_str(sig->type));
}
}
/* Signal type */
enum signal_type signal_type_from_str(const char *str)
{
if (!strcmp(str, "boolean"))
return SIGNAL_TYPE_BOOLEAN;
else if (!strcmp(str, "complex"))
return SIGNAL_TYPE_COMPLEX;
else if (!strcmp(str, "float"))
return SIGNAL_TYPE_FLOAT;
else if (!strcmp(str, "integer"))
return SIGNAL_TYPE_INTEGER;
else if (!strcmp(str, "auto"))
return SIGNAL_TYPE_AUTO;
else
return SIGNAL_TYPE_INVALID;
}
const char * signal_type_to_str(enum signal_type fmt)
{
switch (fmt) {
case SIGNAL_TYPE_BOOLEAN:
return "boolean";
case SIGNAL_TYPE_COMPLEX:
return "complex";
case SIGNAL_TYPE_FLOAT:
return "float";
case SIGNAL_TYPE_INTEGER:
return "integer";
case SIGNAL_TYPE_AUTO:
return "auto";
case SIGNAL_TYPE_INVALID:
return "invalid";
}
return NULL;
}
enum signal_type signal_type_detect(const char *val)
{
char *brk;
int len;
debug(LOG_IO | 5, "Attempt to detect type of: %s", val);
brk = strchr(val, 'i');
if (brk)
return SIGNAL_TYPE_COMPLEX;
brk = strchr(val, '.');
if (brk)
return SIGNAL_TYPE_FLOAT;
len = strlen(val);
if (len == 1 && (val[0] == '1' || val[0] == '0'))
return SIGNAL_TYPE_BOOLEAN;
return SIGNAL_TYPE_INTEGER;
}
/* Signal data */
void signal_data_set(union signal_data *data, const struct signal *sig, double val)
{
switch (sig->type) {
case SIGNAL_TYPE_BOOLEAN:
data->b = val;
break;
case SIGNAL_TYPE_FLOAT:
data->f = val;
break;
case SIGNAL_TYPE_INTEGER:
data->i = val;
break;
case SIGNAL_TYPE_COMPLEX:
data->z = val;
break;
case SIGNAL_TYPE_INVALID:
case SIGNAL_TYPE_AUTO:
memset(data, 0, sizeof(union signal_data));
break;
}
}
void signal_data_cast(union signal_data *data, const struct signal *from, const struct signal *to)
{
if (from->type == to->type) /* Nothing to do */
return;
switch (to->type) {
case SIGNAL_TYPE_BOOLEAN:
switch(from->type) {
case SIGNAL_TYPE_BOOLEAN:
data->b = data->b;
break;
case SIGNAL_TYPE_INTEGER:
data->b = data->i;
break;
case SIGNAL_TYPE_FLOAT:
data->b = data->f;
break;
case SIGNAL_TYPE_COMPLEX:
data->b = creal(data->z);
break;
default: { }
}
break;
case SIGNAL_TYPE_INTEGER:
switch(from->type) {
case SIGNAL_TYPE_BOOLEAN:
data->i = data->b;
break;
case SIGNAL_TYPE_INTEGER:
data->i = data->i;
break;
case SIGNAL_TYPE_FLOAT:
data->i = data->f;
break;
case SIGNAL_TYPE_COMPLEX:
data->i = creal(data->z);
break;
default: { }
}
break;
case SIGNAL_TYPE_FLOAT:
switch(from->type) {
case SIGNAL_TYPE_BOOLEAN:
data->f = data->b;
break;
case SIGNAL_TYPE_INTEGER:
data->f = data->i;
break;
case SIGNAL_TYPE_FLOAT:
data->f = data->f;
break;
case SIGNAL_TYPE_COMPLEX:
data->f = creal(data->z);
break;
default: { }
}
break;
case SIGNAL_TYPE_COMPLEX:
switch(from->type) {
case SIGNAL_TYPE_BOOLEAN:
data->z = CMPLXF(data->b, 0);
break;
case SIGNAL_TYPE_INTEGER:
data->z = CMPLXF(data->i, 0);
break;
case SIGNAL_TYPE_FLOAT:
data->z = CMPLXF(data->f, 0);
break;
case SIGNAL_TYPE_COMPLEX:
data->z = data->z;
break;
default: { }
}
break;
default: { }
}
}
int signal_data_parse_str(union signal_data *data, const struct signal *sig, const char *ptr, char **end)
{
switch (sig->type) {
case SIGNAL_TYPE_FLOAT:
data->f = strtod(ptr, end);
break;
case SIGNAL_TYPE_INTEGER:
data->i = strtol(ptr, end, 10);
break;
case SIGNAL_TYPE_BOOLEAN:
data->b = strtol(ptr, end, 10);
break;
case SIGNAL_TYPE_COMPLEX: {
float real, imag;
real = strtod(ptr, end);
if (*end == ptr)
return -1;
ptr = *end;
imag = strtod(ptr, end);
if (*end == ptr)
return -1;
if (**end != 'i')
return -1;
(*end)++;
data->z = CMPLXF(real, imag);
break;
}
case SIGNAL_TYPE_AUTO:
case SIGNAL_TYPE_INVALID:
return -1;
}
return 0;
}
int signal_data_parse_json(union signal_data *data, const struct signal *sig, json_t *cfg)
{
int ret;
switch (sig->type) {
case SIGNAL_TYPE_FLOAT:
data->f = json_real_value(cfg);
break;
case SIGNAL_TYPE_INTEGER:
data->i = json_integer_value(cfg);
break;
case SIGNAL_TYPE_BOOLEAN:
data->b = json_boolean_value(cfg);
break;
case SIGNAL_TYPE_COMPLEX: {
double real, imag;
ret = json_unpack(cfg, "{ s: F, s: F }",
"real", &real,
"imag", &imag
);
if (ret)
return -2;
data->z = CMPLXF(real, imag);
break;
}
case SIGNAL_TYPE_INVALID:
case SIGNAL_TYPE_AUTO:
return -1;
}
return 0;
}
int signal_data_snprint(const union signal_data *data, const struct signal *sig, char *buf, size_t len)
{
switch (sig->type) {
case SIGNAL_TYPE_FLOAT:
return snprintf(buf, len, "%.6f", data->f);
case SIGNAL_TYPE_INTEGER:
return snprintf(buf, len, "%" PRIi64, data->i);
case SIGNAL_TYPE_BOOLEAN:
return snprintf(buf, len, "%u", data->b);
case SIGNAL_TYPE_COMPLEX:
return snprintf(buf, len, "%.6f%+.6fi", creal(data->z), cimag(data->z));
default:
return 0;
}
}
Reference in a new issue View git blame Copy permalink