/* Shift sequence number of samples. * * Author: Steffen Vogel * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University * SPDX-License-Identifier: Apache-2.0 */ #include #include namespace villas { namespace node { class ShiftSequenceHook : public Hook { protected: int offset; public: using Hook::Hook; virtual void parse(json_t *json) { json_error_t err; int ret; assert(state != State::STARTED); Hook::parse(json); ret = json_unpack_ex(json, &err, 0, "{ s: i }", "offset", &offset); if (ret) throw ConfigError(json, err, "node-config-hook-shift_seq"); state = State::PARSED; } virtual Hook::Reason process(struct Sample *smp) { assert(state == State::STARTED); smp->sequence += offset; return Reason::OK; } }; // Register hook static char n[] = "shift_seq"; static char d[] = "Shift sequence number of samples"; static HookPlugin p; } // namespace node } // namespace villas