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annotate include/endp.h @ 35:c0ce22777694

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add helper functions for DSCP and socket priority
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 09 Jul 2024 01:56:26 +0000
parents fc77c3482084
children
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1 /*
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2 * twrtp_endp is the big abstraction provided by libtwrtp: a complete
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3 * RTP endpoint with RTP & RTCP sockets, sending and receiving both types
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4 * of packets, and incorporating twjit.
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5 */
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6
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7 #pragma once
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8
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9 #include <stdint.h>
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10 #include <stdbool.h>
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11
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12 #include <osmocom/core/osmo_io.h>
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13 #include <osmocom/core/socket.h>
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14 #include <osmocom/core/timer.h>
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16 #include <themwi/rtp/twjit.h>
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17
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18 struct twrtp_endp_tx {
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19 uint32_t ssrc;
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20 uint32_t ts;
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21 uint16_t seq;
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22 bool started;
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23 bool restart;
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24 };
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25
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26 struct twrtp_endp_rtcp_rx {
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27 uint32_t sr_ssrc;
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28 uint16_t sr_ntp_sec;
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29 uint16_t sr_ntp_fract;
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30 struct timespec sr_rx_time;
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31 uint32_t rr_lost_word;
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32 uint32_t rr_jitter;
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33 bool got_sr;
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34 bool got_rr;
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35 };
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36
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37 struct twrtp_endp_rtcp_tx {
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38 uint32_t last_received;
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39 uint32_t last_expected;
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40 };
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41
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42 struct twrtp_endp_stats {
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43 uint32_t rx_rtp_pkt;
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44 uint32_t rx_rtp_badsrc;
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45 uint32_t rx_rtcp_pkt;
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46 uint32_t rx_rtcp_badsrc;
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47 uint32_t rx_rtcp_invalid;
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48 uint32_t rx_rtcp_wrong_ssrc;
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49 uint32_t tx_rtp_pkt;
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50 uint32_t tx_rtp_bytes;
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51 uint32_t tx_rtcp_pkt;
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52 };
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53
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54 struct twrtp_endp {
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55 /* the root of the matter: the two sockets */
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56 int rtp_fd;
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57 int rtcp_fd;
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58 struct osmo_io_fd *iofd_rtp;
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59 struct osmo_io_fd *iofd_rtcp;
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60 struct osmo_sockaddr rtp_remote;
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61 struct osmo_sockaddr rtcp_remote;
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62 /* Rx and Tx state */
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63 struct twrtp_jibuf_inst *twjit;
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64 struct twrtp_endp_tx tx;
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65 struct twrtp_endp_rtcp_rx rtcp_rx;
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66 struct twrtp_endp_rtcp_tx rtcp_tx;
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67 uint8_t *sdes_buf;
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68 uint16_t sdes_len;
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69 uint16_t auto_rtcp_interval;
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70 uint16_t auto_rtcp_count;
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71 /* always have to have stats */
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72 struct twrtp_endp_stats stats;
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73 /* bool flags at the end for structure packing optimization */
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74 bool register_done;
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75 bool remote_set;
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76 bool rx_enable;
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77 };
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78
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79 /* public API functions */
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80
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81 struct twrtp_endp *twrtp_endp_create(void *ctx,
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82 struct twrtp_jibuf_config *config);
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83 void twrtp_endp_destroy(struct twrtp_endp *endp);
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84
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85 int twrtp_endp_register_fds(struct twrtp_endp *endp);
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86 int twrtp_endp_bind_ip_port(struct twrtp_endp *endp, const char *ip,
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87 uint16_t port);
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88
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89 void twrtp_endp_set_remote_ipv4(struct twrtp_endp *endp,
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90 const struct in_addr *ip, uint16_t port);
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92 int twrtp_endp_tx_quantum(struct twrtp_endp *endp, const uint8_t *payload,
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93 unsigned payload_len, uint8_t payload_type,
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94 bool marker, bool auto_marker, bool send_rtcp);
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95 void twrtp_endp_tx_skip(struct twrtp_endp *endp);
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96
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97 int twrtp_endp_set_sdes(struct twrtp_endp *endp, const char *cname,
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98 const char *name, const char *email, const char *phone,
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99 const char *loc, const char *tool, const char *note);
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100 int twrtp_endp_send_rtcp_rr(struct twrtp_endp *endp);
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101
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102 int twrtp_endp_set_dscp(struct twrtp_endp *endp, uint8_t dscp);
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103 int twrtp_endp_set_socket_prio(struct twrtp_endp *endp, int prio);