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VILLASnode/include/villas/signal.hpp

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/* Signal meta data.
*
2022-03-15 09:18:01 -04:00
* Author: Steffen Vogel <post@steffenvogel.de>
2022-03-15 09:28:57 -04:00
* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
2022-07-04 18:20:03 +02:00
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <memory>
#include <jansson.h>
#include <villas/signal_data.hpp>
#include <villas/signal_type.hpp>
// "I" defined by complex.h collides with a define in OpenSSL
#undef I
namespace villas {
namespace node {
/* Signal descriptor.
*
* This data structure contains meta data about samples values in struct Sample::data
*/
class Signal {
public:
using Ptr = std::shared_ptr<Signal>;
std::string name; // The name of the signal.
std::string unit; // The unit of the signal.
union SignalData init; // The initial value of the signal.
enum SignalType type;
// Initialize a signal with default values.
Signal(const std::string &n = "", const std::string &u = "",
enum SignalType t = SignalType::INVALID);
// Parse signal description.
int parse(json_t *json);
std::string toString(const union SignalData *d = nullptr) const;
// Produce JSON representation of signal.
json_t *toJson() const;
bool isNext(const Signal &sig);
};
} // namespace node
} // namespace villas