mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-09 00:00:00 +01:00
134 lines
3.2 KiB
C++
134 lines
3.2 KiB
C++
/* Message related functions.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <arpa/inet.h>
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#include <villas/formats/msg.hpp>
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#include <villas/formats/msg_format.hpp>
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#include <villas/list.hpp>
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#include <villas/sample.hpp>
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#include <villas/signal.hpp>
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#include <villas/utils.hpp>
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using namespace villas;
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using namespace villas::node;
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void villas::node::msg_ntoh(struct Message *m) {
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msg_hdr_ntoh(m);
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for (int i = 0; i < m->length; i++)
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m->data[i].i = ntohl(m->data[i].i);
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}
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void villas::node::msg_hton(struct Message *m) {
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for (int i = 0; i < m->length; i++)
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m->data[i].i = htonl(m->data[i].i);
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msg_hdr_hton(m);
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}
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void villas::node::msg_hdr_hton(struct Message *m) {
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m->length = htons(m->length);
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m->sequence = htonl(m->sequence);
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m->ts.sec = htonl(m->ts.sec);
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m->ts.nsec = htonl(m->ts.nsec);
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}
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void villas::node::msg_hdr_ntoh(struct Message *m) {
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m->length = ntohs(m->length);
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m->sequence = ntohl(m->sequence);
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m->ts.sec = ntohl(m->ts.sec);
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m->ts.nsec = ntohl(m->ts.nsec);
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}
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int villas::node::msg_verify(const struct Message *m) {
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if (m->version != MSG_VERSION)
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return -1;
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else if (m->type != MSG_TYPE_DATA)
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return -2;
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else if (m->reserved1 != 0)
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return -3;
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else
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return 0;
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}
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int villas::node::msg_to_sample(const struct Message *msg, struct Sample *smp,
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const SignalList::Ptr sigs,
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uint8_t *source_index) {
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int ret;
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unsigned i;
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ret = msg_verify(msg);
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if (ret)
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return ret;
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unsigned len = MIN(msg->length, smp->capacity);
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for (i = 0; i < MIN(len, sigs->size()); i++) {
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auto sig = sigs->getByIndex(i);
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if (!sig)
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return -1;
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switch (sig->type) {
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case SignalType::FLOAT:
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smp->data[i].f = msg->data[i].f;
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break;
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case SignalType::INTEGER:
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smp->data[i].i = msg->data[i].i;
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break;
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default:
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return -1;
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}
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}
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smp->flags = (int)SampleFlags::HAS_TS_ORIGIN |
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(int)SampleFlags::HAS_SEQUENCE | (int)SampleFlags::HAS_DATA;
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smp->length = i;
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smp->sequence = msg->sequence;
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MSG_TS(msg, smp->ts.origin);
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if (source_index)
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*source_index = msg->source_index;
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return 0;
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}
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int villas::node::msg_from_sample(struct Message *msg_in,
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const struct Sample *smp,
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const SignalList::Ptr sigs,
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uint8_t source_index) {
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msg_in->type = MSG_TYPE_DATA;
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msg_in->version = MSG_VERSION;
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msg_in->reserved1 = 0;
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msg_in->source_index = source_index;
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msg_in->length = (uint16_t)smp->length;
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msg_in->sequence = (uint32_t)smp->sequence;
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msg_in->ts.sec = smp->ts.origin.tv_sec;
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msg_in->ts.nsec = smp->ts.origin.tv_nsec;
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for (unsigned i = 0; i < smp->length; i++) {
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auto sig = sigs->getByIndex(i);
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if (!sig)
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return -1;
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switch (sig->type) {
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case SignalType::FLOAT:
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msg_in->data[i].f = smp->data[i].f;
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break;
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case SignalType::INTEGER:
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msg_in->data[i].i = smp->data[i].i;
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break;
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default:
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return -1;
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}
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}
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return 0;
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}
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