131 lines
6.0 KiB
C
131 lines
6.0 KiB
C
/* configuration */
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enum osmo_cc_session_nettype {
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osmo_cc_session_nettype_unknown = 0,
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osmo_cc_session_nettype_inet,
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};
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enum osmo_cc_session_addrtype {
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osmo_cc_session_addrtype_unknown = 0,
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osmo_cc_session_addrtype_ipv4,
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osmo_cc_session_addrtype_ipv6,
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};
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typedef struct osmo_cc_session_config {
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enum osmo_cc_session_nettype default_nettype;
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enum osmo_cc_session_addrtype default_addrtype;
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const char *default_unicast_address;
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uint16_t rtp_port_next;
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uint16_t rtp_port_from;
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uint16_t rtp_port_to;
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} osmo_cc_session_config_t;
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/* session description, global part: */
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typedef struct osmo_cc_session_origin {
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const char *username;
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const char *sess_id;
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const char *sess_version;
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const char *nettype;
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const char *addrtype;
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const char *unicast_address;
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} osmo_cc_session_origin_t;
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/* session instance */
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typedef struct osmo_cc_session {
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osmo_cc_session_config_t *config;
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void *priv;
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osmo_cc_session_origin_t origin_local, origin_remote;
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const char *name;
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struct osmo_cc_session_media *media_list;
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} osmo_cc_session_t;
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/* connection description: */
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typedef struct osmo_cc_session_connection_data {
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enum osmo_cc_session_nettype nettype;
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const char *nettype_name;
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enum osmo_cc_session_addrtype addrtype;
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const char *addrtype_name;
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const char *address;
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} osmo_cc_session_connection_data_t;
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/* one media of session description: */
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enum osmo_cc_session_media_type {
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osmo_cc_session_media_type_unknown,
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osmo_cc_session_media_type_audio,
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osmo_cc_session_media_type_video,
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};
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enum osmo_cc_session_media_proto {
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osmo_cc_session_media_proto_unknown,
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osmo_cc_session_media_proto_rtp,
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};
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typedef struct osmo_cc_session_media_description {
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enum osmo_cc_session_media_type type;
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const char *type_name;
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uint16_t port_local, port_remote;
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enum osmo_cc_session_media_proto proto;
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const char *proto_name;
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} osmo_cc_session_media_description_t;
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/* media entry */
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typedef struct osmo_cc_session_media {
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struct osmo_cc_session_media *next;
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osmo_cc_session_t *session;
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osmo_cc_session_media_description_t description;
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osmo_cc_session_connection_data_t connection_data_local, connection_data_remote;
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struct osmo_cc_session_codec *codec_list;
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int send, receive;
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void (*receiver)(struct osmo_cc_session_codec *codec, uint8_t marker, uint16_t sequence_number, uint32_t timestamp, uint32_t ssrc, uint8_t *data, int len);
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int rtp_socket;
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int rtcp_socket;
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uint32_t tx_ssrc, rx_ssrc;
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uint16_t tx_sequence, rx_sequence;
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uint32_t tx_timestamp, rx_timestamp;
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int accepted;
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} osmo_cc_session_media_t;
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/* codec entry */
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typedef struct osmo_cc_session_codec {
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struct osmo_cc_session_codec *next;
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osmo_cc_session_media_t *media;
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uint8_t payload_type_local, payload_type_remote; /* local = towards local, remote = toward remote */
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const char *payload_name;
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uint32_t payload_rate;
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int payload_channels;
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void (*encoder)(uint8_t *src_data, int src_len, uint8_t **dst_data, int *dst_len);
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void (*decoder)(uint8_t *src_data, int src_len, uint8_t **dst_data, int *dst_len);
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int accepted;
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} osmo_cc_session_codec_t;
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#define osmo_cc_session_for_each_media(head, m) \
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for (m = (head); m; m = m->next)
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#define osmo_cc_session_for_each_codec(head, c) \
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for (c = (head); c; c = c->next)
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void osmo_cc_set_local_peer(osmo_cc_session_config_t *conf, enum osmo_cc_session_nettype nettype, enum osmo_cc_session_addrtype addrtype, const char *address);
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osmo_cc_session_t *osmo_cc_new_session(osmo_cc_session_config_t *conf, void *priv, const char *username, const char *sess_id, const char *sess_version, enum osmo_cc_session_nettype nettype, enum osmo_cc_session_addrtype addrtype, const char *unicast_address, const char *session_name, int debug);
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void osmo_cc_free_session(osmo_cc_session_t *session);
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osmo_cc_session_media_t *osmo_cc_add_media(osmo_cc_session_t *session, enum osmo_cc_session_nettype nettype, enum osmo_cc_session_addrtype addrtype, const char *address, enum osmo_cc_session_media_type type, uint16_t port, enum osmo_cc_session_media_proto proto, int send, int receive, void (*receiver)(struct osmo_cc_session_codec *codec, uint8_t marker, uint16_t sequence_number, uint32_t timestamp, uint32_t ssrc, uint8_t *data, int len), int debug);
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void osmo_cc_free_media(osmo_cc_session_media_t *media);
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osmo_cc_session_codec_t *osmo_cc_add_codec(osmo_cc_session_media_t *media, const char *playload_name, uint32_t playload_rate, int playload_channels, void (*encoder)(uint8_t *src_data, int src_len, uint8_t **dst_data, int *dst_len), void (*decoder)(uint8_t *src_data, int src_len, uint8_t **dst_data, int *dst_len), int debug);
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void osmo_cc_free_codec(osmo_cc_session_codec_t *codec);
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int osmo_cc_session_check(struct osmo_cc_session *session, int remote);
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const char *osmo_cc_session_send_offer(osmo_cc_session_t *session);
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osmo_cc_session_t *osmo_cc_session_receive_offer(osmo_cc_session_config_t *conf, void *priv, const char *sdp);
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void osmo_cc_session_accept_media(osmo_cc_session_media_t *media, enum osmo_cc_session_nettype nettype, enum osmo_cc_session_addrtype addrtype, const char *address, int send, int receive, void (*receiver)(struct osmo_cc_session_codec *codec, uint8_t marker, uint16_t sequence_number, uint32_t timestamp, uint32_t ssrc, uint8_t *data, int len));
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void osmo_cc_session_accept_codec(osmo_cc_session_codec_t *codec, void (*encoder)(uint8_t *src_data, int src_len, uint8_t **dst_data, int *dst_len), void (*decoder)(uint8_t *src_data, int src_len, uint8_t **dst_data, int *dst_len));
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const char *osmo_cc_session_send_answer(osmo_cc_session_t *session);
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int osmo_cc_session_receive_answer(osmo_cc_session_t *session, const char *sdp);
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const char *osmo_cc_session_nettype2string(enum osmo_cc_session_nettype nettype);
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const char *osmo_cc_session_addrtype2string(enum osmo_cc_session_addrtype addrtype);
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const char *osmo_cc_session_media_type2string(enum osmo_cc_session_media_type media_type);
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const char *osmo_cc_session_media_proto2string(enum osmo_cc_session_media_proto media_proto);
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int osmo_cc_session_if_codec(osmo_cc_session_codec_t *codec, const char *name, uint32_t rate, int channels);
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int osmo_cc_session_handle(osmo_cc_session_t *session);
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