82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/**
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* Project: Open Vehicle Monitor System
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* Module: RE tools
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*
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* crtdreplay: CRTD CAN dump format timing replay filter
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*
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* Note: this filter is meant to replay a CRTD recording into RE tools serve mode
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* with about the same timing as recorded. The filter does not make any attempt at
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* recreating the exact timing.
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*
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* Usage example:
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* OVMS# re start
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* OVMS# re serve format crtd
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* OVMS# re serve mode simulate
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* <user@pc> cat some.crtd | crtdreplay | nc ovms.local 3000
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*
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* Delay between records is limited by default to max 1 second.
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* Overwrite with 'crtdreplay <seconds>', e.g. 'crtdreplay 0.5'.
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*
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* Build: gcc crtdreplay.c -o crtdreplay
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*
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* (c) 2019 Michael Balzer <dexter@dexters-web.de>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <ctype.h>
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int main(int argc, char *argv[])
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{
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char buf[1000];
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double ref = 0, ts;
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struct timespec slp;
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double maxsleep = 1;
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if (argc >= 2) {
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if (!isdigit(argv[1][0])) {
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fprintf(stderr,
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"%s: CRTD CAN dump format timing replay filter\n"
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"Usage: cat some.crtd | crtdreplay | nc ovms.local 3000\n"
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"Delay between records is limited by default to max 1 second.\n"
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"Overwrite with 'crtdreplay <seconds>', e.g. 'crtdreplay 0.5'.\n",
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argv[0]);
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exit(1);
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}
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maxsleep = atof(argv[1]);
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fprintf(stderr, "maxsleep=%lf\n", maxsleep);
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}
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while (fgets(buf, sizeof buf, stdin)) {
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sscanf(buf, "%lf", &ts);
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if (ref) {
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double diff = ts - ref;
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if (diff > maxsleep) diff = maxsleep;
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slp.tv_sec = (time_t) diff;
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slp.tv_nsec = (diff - slp.tv_sec) * 1e9;
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nanosleep(&slp, NULL);
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}
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ref = ts;
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fputs(buf, stdout);
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}
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}
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