FreeCalypso > hg > ice1-trau-tester

annotate pcm-br/xconn.c @ 40:e1eabf554a75

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libhr: small subset of WIP libgsmhr1
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 30 Aug 2024 16:41:56 +0000
parents 499d065ee591
children
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1 /*
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2 * The two functions in this module get called from Osmocom select loop
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3 * whenever each timeslot data socket to osmo-e1d is ready for reading;
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4 * the cross-connect of the two timeslots is implemented here.
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5 */
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7 #include <stdint.h>
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8 #include <stdbool.h>
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11 #include <unistd.h>
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13 #include <osmocom/core/select.h>
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15 #include "globals.h"
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17 uint8_t readbuf_a[160], readbuf_b[160];
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18 FILE *rec_file_a, *rec_file_b;
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20 int tsa_fd_cb(struct osmo_fd *ofd, unsigned int what)
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21 {
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22 int rc;
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23
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24 rc = read(tsa_fd, readbuf_a, 160);
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25 if (rc != 160) {
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26 fprintf(stderr,
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27 "error: read from ts A returned %d instead of 160\n",
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28 rc);
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29 exit(1);
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30 }
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31 if (rec_file_a)
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32 fwrite(readbuf_a, 1, 160, rec_file_a);
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33 write(tsb_fd, readbuf_a, 160);
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34 return 0;
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35 }
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37 int tsb_fd_cb(struct osmo_fd *ofd, unsigned int what)
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38 {
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39 int rc;
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41 rc = read(tsb_fd, readbuf_b, 160);
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42 if (rc != 160) {
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43 fprintf(stderr,
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44 "error: read from ts B returned %d instead of 160\n",
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45 rc);
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46 exit(1);
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47 }
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48 if (rec_file_b)
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49 fwrite(readbuf_b, 1, 160, rec_file_b);
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50 write(tsa_fd, readbuf_b, 160);
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51 return 0;
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52 }