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https://git.rwth-aachen.de/acs/public/villas/node/
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78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/** Shift sequence number of samples
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2020, 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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/** @addtogroup hooks Hook functions
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* @{
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*/
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#include <villas/hook.hpp>
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#include <villas/sample.h>
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namespace villas {
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namespace node {
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class ShiftSequenceHook : public Hook {
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protected:
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int offset;
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public:
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using Hook::Hook;
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virtual void parse(json_t *cfg)
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{
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json_error_t err;
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int ret;
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assert(state != State::STARTED);
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Hook::parse(cfg);
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ret = json_unpack_ex(cfg, &err, 0, "{ s: i }",
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"offset", &offset
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);
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if (ret)
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throw ConfigError(cfg, err, "node-config-hook-shift_seq");
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state = State::PARSED;
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}
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virtual Hook::Reason process(sample *smp)
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{
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assert(state == State::STARTED);
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smp->sequence += offset;
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return Reason::OK;
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}
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};
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/* Register hook */
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static char n[] = "shift_seq";
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static char d[] = "Shift sequence number of samples";
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static HookPlugin<ShiftSequenceHook, n, d, (int) Hook::Flags::NODE_READ | (int) Hook::Flags::PATH> p;
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} /* namespace node */
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} /* namespace villas */
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/** @} */
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