/usr/include/re/re_sdp.h is in libre-dev 0.5.6-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /**
* @file re_sdp.h Interface to Session Description Protocol (SDP)
*
* Copyright (C) 2010 Creytiv.com
*/
enum {
SDP_VERSION = 0
};
/** SDP Direction */
enum sdp_dir {
SDP_INACTIVE = 0,
SDP_RECVONLY = 1,
SDP_SENDONLY = 2,
SDP_SENDRECV = 3,
};
/** SDP Bandwidth type */
enum sdp_bandwidth {
SDP_BANDWIDTH_MIN = 0,
SDP_BANDWIDTH_CT = 0, /**< [kbit/s] Conference Total */
SDP_BANDWIDTH_AS, /**< [kbit/s] Application Specific */
SDP_BANDWIDTH_RS, /**< [bit/s] RTCP Senders (RFC 3556) */
SDP_BANDWIDTH_RR, /**< [bit/s] RTCP Receivers (RFC 3556) */
SDP_BANDWIDTH_TIAS, /**< [bit/s] Transport Independent Application
Specific Maximum (RFC 3890) */
SDP_BANDWIDTH_MAX,
};
struct sdp_format;
typedef int(sdp_media_enc_h)(struct mbuf *mb, bool offer, void *arg);
typedef int(sdp_fmtp_enc_h)(struct mbuf *mb, const struct sdp_format *fmt,
bool offer, void *data);
typedef bool(sdp_fmtp_cmp_h)(const char *params1, const char *params2,
void *data);
typedef bool(sdp_format_h)(struct sdp_format *fmt, void *arg);
typedef bool(sdp_attr_h)(const char *name, const char *value, void *arg);
/** SDP Format */
struct sdp_format {
struct le le;
char *id;
char *params;
char *rparams;
char *name;
sdp_fmtp_enc_h *ench;
sdp_fmtp_cmp_h *cmph;
void *data;
bool ref;
bool sup;
int pt;
uint32_t srate;
uint8_t ch;
};
/* session */
struct sdp_session;
int sdp_session_alloc(struct sdp_session **sessp, const struct sa *laddr);
void sdp_session_set_laddr(struct sdp_session *sess, const struct sa *laddr);
void sdp_session_set_lbandwidth(struct sdp_session *sess,
enum sdp_bandwidth type, int32_t bw);
int sdp_session_set_lattr(struct sdp_session *sess, bool replace,
const char *name, const char *value, ...);
void sdp_session_del_lattr(struct sdp_session *sess, const char *name);
int32_t sdp_session_lbandwidth(const struct sdp_session *sess,
enum sdp_bandwidth type);
int32_t sdp_session_rbandwidth(const struct sdp_session *sess,
enum sdp_bandwidth type);
const char *sdp_session_rattr(const struct sdp_session *sess,
const char *name);
const char *sdp_session_rattr_apply(const struct sdp_session *sess,
const char *name,
sdp_attr_h *attrh, void *arg);
const struct list *sdp_session_medial(const struct sdp_session *sess,
bool local);
int sdp_session_debug(struct re_printf *pf, const struct sdp_session *sess);
/* media */
struct sdp_media;
int sdp_media_add(struct sdp_media **mp, struct sdp_session *sess,
const char *name, uint16_t port, const char *proto);
int sdp_media_set_alt_protos(struct sdp_media *m, unsigned protoc, ...);
void sdp_media_set_encode_handler(struct sdp_media *m, sdp_media_enc_h *ench,
void *arg);
void sdp_media_set_fmt_ignore(struct sdp_media *m, bool fmt_ignore);
void sdp_media_set_disabled(struct sdp_media *m, bool disabled);
void sdp_media_set_lport(struct sdp_media *m, uint16_t port);
void sdp_media_set_laddr(struct sdp_media *m, const struct sa *laddr);
void sdp_media_set_lbandwidth(struct sdp_media *m, enum sdp_bandwidth type,
int32_t bw);
void sdp_media_set_lport_rtcp(struct sdp_media *m, uint16_t port);
void sdp_media_set_laddr_rtcp(struct sdp_media *m, const struct sa *laddr);
void sdp_media_set_ldir(struct sdp_media *m, enum sdp_dir dir);
int sdp_media_set_lattr(struct sdp_media *m, bool replace,
const char *name, const char *value, ...);
void sdp_media_del_lattr(struct sdp_media *m, const char *name);
const char *sdp_media_proto(const struct sdp_media *m);
uint16_t sdp_media_rport(const struct sdp_media *m);
const struct sa *sdp_media_raddr(const struct sdp_media *m);
const struct sa *sdp_media_laddr(const struct sdp_media *m);
void sdp_media_raddr_rtcp(const struct sdp_media *m, struct sa *raddr);
int32_t sdp_media_rbandwidth(const struct sdp_media *m,
enum sdp_bandwidth type);
enum sdp_dir sdp_media_ldir(const struct sdp_media *m);
enum sdp_dir sdp_media_rdir(const struct sdp_media *m);
enum sdp_dir sdp_media_dir(const struct sdp_media *m);
const struct sdp_format *sdp_media_lformat(const struct sdp_media *m, int pt);
const struct sdp_format *sdp_media_rformat(const struct sdp_media *m,
const char *name);
struct sdp_format *sdp_media_format(const struct sdp_media *m,
bool local, const char *id,
int pt, const char *name,
int32_t srate, int8_t ch);
struct sdp_format *sdp_media_format_apply(const struct sdp_media *m,
bool local, const char *id,
int pt, const char *name,
int32_t srate, int8_t ch,
sdp_format_h *fmth, void *arg);
const struct list *sdp_media_format_lst(const struct sdp_media *m, bool local);
const char *sdp_media_rattr(const struct sdp_media *m, const char *name);
const char *sdp_media_session_rattr(const struct sdp_media *m,
const struct sdp_session *sess,
const char *name);
const char *sdp_media_rattr_apply(const struct sdp_media *m, const char *name,
sdp_attr_h *attrh, void *arg);
const char *sdp_media_name(const struct sdp_media *m);
int sdp_media_debug(struct re_printf *pf, const struct sdp_media *m);
/* format */
int sdp_format_add(struct sdp_format **fmtp, struct sdp_media *m,
bool prepend, const char *id, const char *name,
uint32_t srate, uint8_t ch, sdp_fmtp_enc_h *ench,
sdp_fmtp_cmp_h *cmph, void *data, bool ref,
const char *params, ...);
int sdp_format_set_params(struct sdp_format *fmt, const char *params, ...);
bool sdp_format_cmp(const struct sdp_format *fmt1,
const struct sdp_format *fmt2);
int sdp_format_debug(struct re_printf *pf, const struct sdp_format *fmt);
/* encode/decode */
int sdp_encode(struct mbuf **mbp, struct sdp_session *sess, bool offer);
int sdp_decode(struct sdp_session *sess, struct mbuf *mb, bool offer);
/* strings */
const char *sdp_dir_name(enum sdp_dir dir);
const char *sdp_bandwidth_name(enum sdp_bandwidth type);
extern const char sdp_attr_fmtp[];
extern const char sdp_attr_maxptime[];
extern const char sdp_attr_ptime[];
extern const char sdp_attr_rtcp[];
extern const char sdp_attr_rtpmap[];
extern const char sdp_media_audio[];
extern const char sdp_media_video[];
extern const char sdp_media_text[];
extern const char sdp_proto_rtpavp[];
extern const char sdp_proto_rtpsavp[];
/* utility functions */
/** RTP Header Extensions, as defined in RFC 5285 */
struct sdp_extmap {
struct pl name;
struct pl attrs;
enum sdp_dir dir;
bool dir_set;
uint32_t id;
};
int sdp_extmap_decode(struct sdp_extmap *ext, const char *val);
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