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annotate sip-manual-out/rtp.c @ 187:258932879f8b

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sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 16 Mar 2023 23:46:17 -0800
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children 6aecee01cf0a
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258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
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1 /*
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2 * In this module we implement our RTP handling: obtaining a PSTN-side
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3 * RTP endpoint from themwi-rtp-mgr, then handling read select on RTP
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4 * and RTCP UDP sockets.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <sys/socket.h>
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9 #include <netinet/in.h>
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include "../include/tmgw_const.h"
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15 #include "../librtpalloc/rtp_alloc_simple.h"
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16
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17 struct sockaddr_in rtp_local_addr;
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18 int rtp_udp_fd, rtcp_udp_fd;
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19
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20 static int got_some_rtp, got_some_rtcp;
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21
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22 void
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23 obtain_rtp_endp()
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24 {
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25 int rc;
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26 struct rtp_alloc_simple res;
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27
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28 rc = rtp_alloc_simple(TMGW_EP_TYPE_PSTN_ONLY, &res);
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29 if (rc < 0)
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30 exit(1); /* error msg already printed */
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31 bcopy(&res.pstn_addr, &rtp_local_addr, sizeof(struct sockaddr_in));
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32 rtp_udp_fd = res.pstn_rtp_fd;
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33 rtcp_udp_fd = res.pstn_rtcp_fd;
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34 }
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35
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36 void
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37 rtp_rx_select()
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38 {
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39 u_char buf[512];
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40
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41 recv(rtp_udp_fd, buf, sizeof buf, 0);
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42 if (!got_some_rtp) {
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43 printf("Got some RTP\n");
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44 got_some_rtp = 1;
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45 }
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46 }
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47
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48 void
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49 rtcp_rx_select()
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50 {
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51 u_char buf[512];
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52
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53 recv(rtcp_udp_fd, buf, sizeof buf, 0);
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54 if (!got_some_rtcp) {
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55 printf("Got some RTCP\n");
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56 got_some_rtcp = 1;
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57 }
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58 }