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VILLASnode/lib/hooks/shift_seq.cpp
Steffen Vogel 7eec1bb753 update Steffens mail address
Signed-off-by: Steffen Vogel <post@steffenvogel.de>
2022-12-16 23:44:07 +01:00

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1.1 KiB
C++

/** Shift sequence number of samples
*
* @author Steffen Vogel <post@steffenvogel.de>
* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
* @license Apache 2.0
*********************************************************************************/
#include <villas/hook.hpp>
#include <villas/sample.hpp>
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<ShiftSequenceHook, n, d, (int) Hook::Flags::NODE_READ | (int) Hook::Flags::PATH> p;
} /* namespace node */
} /* namespace villas */