/usr/include/reflow/rtcp/re_rtp.h is in librecon-1.11-dev 1:1.11.0~beta5-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | /**
* @file re_rtp.h Interface to Real-time Transport Protocol and RTCP
*
* Copyright (C) 2010 Creytiv.com
*/
/** RTP protocol values */
enum {
RTP_VERSION = 2, /**< Defines the RTP version we support */
RTCP_VERSION = 2, /**< Supported RTCP Version */
RTP_HEADER_SIZE = 12 /**< Number of bytes in RTP Header */
};
/** Defines the RTP header */
struct rtp_header {
uint8_t ver; /**< RTP version number */
bool pad; /**< Padding bit */
bool ext; /**< Extension bit */
uint8_t cc; /**< CSRC count */
bool m; /**< Marker bit */
uint8_t pt; /**< Payload type */
uint16_t seq; /**< Sequence number */
uint32_t ts; /**< Timestamp */
uint32_t ssrc; /**< Synchronization source */
uint32_t csrc[16]; /**< Contributing sources */
struct {
uint16_t type; /**< Defined by profile */
uint16_t len; /**< Number of 32-bit words */
} x;
};
/** RTCP Packet Types */
enum rtcp_type {
RTCP_FIR = 192, /**< Full INTRA-frame Request (RFC 2032) */
RTCP_NACK = 193, /**< Negative Acknowledgement (RFC 2032) */
RTCP_SR = 200, /**< Sender Report */
RTCP_RR = 201, /**< Receiver Report */
RTCP_SDES = 202, /**< Source Description */
RTCP_BYE = 203, /**< Goodbye */
RTCP_APP = 204, /**< Application-defined */
RTCP_RTPFB = 205, /**< Transport layer FB message (RFC 4585) */
RTCP_PSFB = 206, /**< Payload-specific FB message (RFC 4585) */
RTCP_XR = 207, /**< Extended Report (RFC 3611) */
RTCP_AVB = 208, /**< AVB RTCP Packet (IEEE1733) */
};
/** SDES Types */
enum rtcp_sdes_type {
RTCP_SDES_END = 0, /**< End of SDES list */
RTCP_SDES_CNAME = 1, /**< Canonical name */
RTCP_SDES_NAME = 2, /**< User name */
RTCP_SDES_EMAIL = 3, /**< User's electronic mail address */
RTCP_SDES_PHONE = 4, /**< User's phone number */
RTCP_SDES_LOC = 5, /**< Geographic user location */
RTCP_SDES_TOOL = 6, /**< Name of application or tool */
RTCP_SDES_NOTE = 7, /**< Notice about the source */
RTCP_SDES_PRIV = 8 /**< Private extension */
};
/** Transport Layer Feedback Messages */
enum rtcp_rtpfb {
RTCP_RTPFB_GNACK = 1 /**< Generic NACK */
};
/** Payload-Specific Feedback Messages */
enum rtcp_psfb {
RTCP_PSFB_PLI = 1, /**< Picture Loss Indication (PLI) */
RTCP_PSFB_SLI = 2, /**< Slice Loss Indication (SLI) */
RTCP_PSFB_AFB = 15, /**< Application layer Feedback Messages */
};
/** Reception report block */
struct rtcp_rr {
uint32_t ssrc; /**< Data source being reported */
//unsigned int fraction:8; /**< Fraction lost since last SR/RR */
//int lost:24; /**< Cumul. no. pkts lost (signed!) */
uint32_t fraction_lost_32;/**< Combine the previous two fields */
uint32_t last_seq; /**< Extended last seq. no. received */
uint32_t jitter; /**< Interarrival jitter */
uint32_t lsr; /**< Last SR packet from this source */
uint32_t dlsr; /**< Delay since last SR packet */
};
/** SDES item */
struct rtcp_sdes_item {
enum rtcp_sdes_type type; /**< Type of item (enum rtcp_sdes_type) */
uint8_t length; /**< Length of item (in octets) */
char *data; /**< Text, not null-terminated */
};
/** One RTCP Message */
struct rtcp_msg {
/** RTCP Header */
struct rtcp_hdr {
unsigned int version:2; /**< Protocol version */
unsigned int p:1; /**< Padding flag */
unsigned int count:5; /**< Varies by packet type */
unsigned int pt:8; /**< RTCP packet type */
uint16_t length; /**< Packet length in words */
} hdr;
union {
/** Sender report (SR) */
struct {
uint32_t ssrc; /**< Sender generating report */
uint32_t ntp_sec; /**< NTP timestamp - seconds */
uint32_t ntp_frac; /**< NTP timestamp - fractions */
uint32_t rtp_ts; /**< RTP timestamp */
uint32_t psent; /**< RTP packets sent */
uint32_t osent; /**< RTP octets sent */
struct rtcp_rr rrv[1]; /**< Reception report blocks */
} sr;
/** Reception report (RR) */
struct {
uint32_t ssrc; /**< Receiver generating report*/
struct rtcp_rr rrv[1]; /**< Reception report blocks */
} rr;
} r;
};
/** RTCP Statistics */
struct rtcp_stats {
struct {
uint32_t sent; /**< Tx RTP Packets */
int lost; /**< Tx RTP Packets Lost */
uint32_t jit; /**< Tx Inter-arrival Jitter in [us] */
} tx;
struct {
uint32_t sent; /**< Rx RTP Packets */
int lost; /**< Rx RTP Packets Lost */
uint32_t jit; /**< Rx Inter-Arrival Jitter in [us] */
} rx;
uint32_t rtt; /**< Current Round-Trip Time in [us] */
};
struct sa;
struct re_printf;
struct rtp_sock;
typedef void (rtp_recv_h)(const struct sa *src, const struct rtp_header *hdr,
struct mbuf *mb, void *arg);
typedef void (rtcp_recv_h)(const struct sa *src, struct rtcp_msg *msg,
void *arg);
/* RTP api */
int rtp_alloc(struct rtp_sock **rsp);
int rtp_listen(struct rtp_sock **rsp, int proto, const struct sa *ip,
uint16_t min_port, uint16_t max_port, bool enable_rtcp,
rtp_recv_h *recvh, rtcp_recv_h *rtcph, void *arg);
int rtp_hdr_encode(struct mbuf *mb, const struct rtp_header *hdr);
int rtp_hdr_decode(struct rtp_header *hdr, struct mbuf *mb);
int rtp_encode(struct rtp_sock *rs, bool marker, uint8_t pt,
uint32_t ts, struct mbuf *mb);
int rtp_decode(struct rtp_sock *rs, struct mbuf *mb, struct rtp_header *hdr);
int rtp_send(struct rtp_sock *rs, const struct sa *dst,
bool marker, uint8_t pt, uint32_t ts, struct mbuf *mb);
int rtp_debug(struct re_printf *pf, const struct rtp_sock *rs);
void *rtp_sock(const struct rtp_sock *rs);
uint32_t rtp_sess_ssrc(const struct rtp_sock *rs);
const struct sa *rtp_local(const struct rtp_sock *rs);
/* RTCP session api */
void rtcp_start(struct rtp_sock *rs, const char *cname,
const struct sa *peer);
void rtcp_enable_mux(struct rtp_sock *rs, bool enabled);
void rtcp_set_srate(struct rtp_sock *rs, uint32_t sr_tx, uint32_t sr_rx);
void rtcp_set_srate_tx(struct rtp_sock *rs, uint32_t srate_tx);
void rtcp_set_srate_rx(struct rtp_sock *rs, uint32_t srate_rx);
int rtcp_send_app(struct rtp_sock *rs, const char name[4],
const uint8_t *data, size_t len);
int rtcp_send_fir(struct rtp_sock *rs, uint32_t ssrc);
int rtcp_send_nack(struct rtp_sock *rs, uint16_t fsn, uint16_t blp);
int rtcp_send_pli(struct rtp_sock *rs, uint32_t fb_ssrc);
int rtcp_debug(struct re_printf *pf, const struct rtp_sock *rs);
void *rtcp_sock(const struct rtp_sock *rs);
int rtcp_stats(struct rtp_sock *rs, uint32_t ssrc, struct rtcp_stats *stats);
/* RTCP utils */
int rtcp_encode(struct mbuf *mb, enum rtcp_type type, uint32_t count, ...);
int rtcp_decode(struct rtcp_msg **msgp, struct mbuf *mb);
int rtcp_msg_print(struct re_printf *pf, const struct rtcp_msg *msg);
int rtcp_sdes_encode(struct mbuf *mb, uint32_t src, uint32_t itemc, ...);
const char *rtcp_type_name(enum rtcp_type type);
const char *rtcp_sdes_name(enum rtcp_sdes_type sdes);
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