mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-09 00:00:00 +01:00
144 lines
3.4 KiB
C++
144 lines
3.4 KiB
C++
/** Message related functions.
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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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#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/sample.h>
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#include <villas/signal.h>
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#include <villas/utils.hpp>
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#include <villas/list.h>
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void msg_ntoh(struct msg *m)
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{
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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 msg_hton(struct msg *m)
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{
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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 msg_hdr_hton(struct msg *m)
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{
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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 msg_hdr_ntoh(struct msg *m)
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{
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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 msg_verify(const struct msg *m)
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{
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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 msg_to_sample(const struct msg *msg, struct sample *smp, const struct vlist *sigs)
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{
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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, vlist_length(sigs)); i++) {
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struct signal *sig = (struct signal *) vlist_at_safe(sigs, 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 | (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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return 0;
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}
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int msg_from_sample(struct msg *msg_in, const struct sample *smp, const struct vlist *sigs)
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{
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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->id = 0;
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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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struct signal *sig = (struct signal *) vlist_at_safe(sigs, 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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