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rtp.h
Go to the documentation of this file.
#ifndef JANUS_RTP_H
#define JANUS_RTP_H
#include <arpa/inet.h>
#if defined (__MACH__) || defined(__FreeBSD__)
#include <machine/endian.h>
#define __BYTE_ORDER BYTE_ORDER
#define __BIG_ENDIAN BIG_ENDIAN
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#else
#include <endian.h>
#endif
#include <inttypes.h>
#include <string.h>
#include <glib.h>
#include <jansson.h>
#include "plugins/plugin.h"
#define RTP_HEADER_SIZE 12
typedef struct rtp_header
{
#if __BYTE_ORDER == __BIG_ENDIAN
uint16_t version:2;
uint16_t padding:1;
uint16_t extension:1;
uint16_t csrccount:4;
uint16_t markerbit:1;
uint16_t type:7;
#elif __BYTE_ORDER == __LITTLE_ENDIAN
uint16_t csrccount:4;
uint16_t extension:1;
uint16_t padding:1;
uint16_t version:2;
uint16_t type:7;
uint16_t markerbit:1;
#endif
uint16_t seq_number;
uint32_t timestamp;
uint32_t ssrc;
uint32_t csrc[16];
} rtp_header;
typedef rtp_header janus_rtp_header;
typedef struct janus_rtp_packet {
char *data;
gint length;
gint64 created;
gint64 last_retransmit;
janus_plugin_rtp_extensions extensions;
} janus_rtp_packet;
typedef struct janus_rtp_header_extension {
uint16_t type;
uint16_t length;
} janus_rtp_header_extension;
#define JANUS_RTP_EXTMAP_AUDIO_LEVEL "urn:ietf:params:rtp-hdrext:ssrc-audio-level"
#define JANUS_RTP_EXTMAP_TOFFSET "urn:ietf:params:rtp-hdrext:toffset"
#define JANUS_RTP_EXTMAP_ABS_SEND_TIME "http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time"
#define JANUS_RTP_EXTMAP_VIDEO_ORIENTATION "urn:3gpp:video-orientation"
#define JANUS_RTP_EXTMAP_TRANSPORT_WIDE_CC "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01"
#define JANUS_RTP_EXTMAP_PLAYOUT_DELAY "http://www.webrtc.org/experiments/rtp-hdrext/playout-delay"
#define JANUS_RTP_EXTMAP_MID "urn:ietf:params:rtp-hdrext:sdes:mid"
#define JANUS_RTP_EXTMAP_RID "urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id"
#define JANUS_RTP_EXTMAP_REPAIRED_RID "urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id"
#define JANUS_RTP_EXTMAP_DEPENDENCY_DESC "https://aomediacodec.github.io/av1-rtp-spec/#dependency-descriptor-rtp-header-extension"
#define JANUS_RTP_EXTMAP_ENCRYPTED "urn:ietf:params:rtp-hdrext:encrypt"
int janus_rtp_extension_id(const char *type);
typedef enum janus_audiocodec {
JANUS_AUDIOCODEC_NONE,
JANUS_AUDIOCODEC_OPUS,
JANUS_AUDIOCODEC_MULTIOPUS,
JANUS_AUDIOCODEC_OPUSRED,
JANUS_AUDIOCODEC_PCMU,
JANUS_AUDIOCODEC_PCMA,
JANUS_AUDIOCODEC_G722,
JANUS_AUDIOCODEC_ISAC_32K,
JANUS_AUDIOCODEC_ISAC_16K,
JANUS_AUDIOCODEC_L16_48K,
JANUS_AUDIOCODEC_L16_16K
} janus_audiocodec;
const char *janus_audiocodec_name(janus_audiocodec acodec);
janus_audiocodec janus_audiocodec_from_name(const char *name);
int janus_audiocodec_pt(janus_audiocodec acodec);
typedef enum janus_videocodec {
JANUS_VIDEOCODEC_NONE,
JANUS_VIDEOCODEC_VP8,
JANUS_VIDEOCODEC_VP9,
JANUS_VIDEOCODEC_H264,
JANUS_VIDEOCODEC_AV1,
JANUS_VIDEOCODEC_H265
} janus_videocodec;
const char *janus_videocodec_name(janus_videocodec vcodec);
janus_videocodec janus_videocodec_from_name(const char *name);
int janus_videocodec_pt(janus_videocodec vcodec);
gboolean janus_is_rtp(char *buf, guint len);
char *janus_rtp_payload(char *buf, int len, int *plen);
int janus_rtp_header_extension_get_id(const char *sdp, const char *extension);
const char *janus_rtp_header_extension_get_from_id(const char *sdp, int id);
int janus_rtp_header_extension_parse_audio_level(char *buf, int len, int id, gboolean *vad, int *level);
int janus_rtp_header_extension_parse_video_orientation(char *buf, int len, int id,
gboolean *c, gboolean *f, gboolean *r1, gboolean *r0);
int janus_rtp_header_extension_parse_playout_delay(char *buf, int len, int id,
uint16_t *min_delay, uint16_t *max_delay);
int janus_rtp_header_extension_parse_mid(char *buf, int len, int id,
char *sdes_item, int sdes_len);
int janus_rtp_header_extension_parse_rid(char *buf, int len, int id,
char *sdes_item, int sdes_len);
int janus_rtp_header_extension_parse_dependency_desc(char *buf, int len, int id,
uint8_t *dd_item, int *dd_len);
int janus_rtp_header_extension_parse_abs_sent_time(char *buf, int len, int id, uint32_t *abs_ts);
int janus_rtp_header_extension_set_abs_send_time(char *buf, int len, int id, uint32_t abs_ts);
int janus_rtp_header_extension_parse_transport_wide_cc(char *buf, int len, int id, uint16_t *transSeqNum);
int janus_rtp_header_extension_set_transport_wide_cc(char *buf, int len, int id, uint16_t transSeqNum);
int janus_rtp_header_extension_replace_id(char *buf, int len, int id, int new_id);
typedef struct janus_rtp_switching_context {
uint32_t last_ssrc, last_ts, base_ts, base_ts_prev, prev_ts, target_ts, start_ts;
uint16_t last_seq, prev_seq, base_seq, base_seq_prev;
gboolean ts_reset, seq_reset, new_ssrc;
gint16 seq_offset;
gint32 prev_delay, active_delay, ts_offset;
gint64 last_time, reference_time, start_time, evaluating_start_time;
} janus_rtp_switching_context;
void janus_rtp_switching_context_reset(janus_rtp_switching_context *context);
void janus_rtp_header_update(janus_rtp_header *header, janus_rtp_switching_context *context, gboolean video, int step);
#define RTP_AUDIO_SKEW_TH_MS 120
#define RTP_VIDEO_SKEW_TH_MS 120
#define SKEW_DETECTION_WAIT_TIME_SECS 10
int janus_rtp_skew_compensate_audio(janus_rtp_header *header, janus_rtp_switching_context *context, gint64 now);
int janus_rtp_skew_compensate_video(janus_rtp_header *header, janus_rtp_switching_context *context, gint64 now);
typedef struct janus_rtp_simulcasting_context {
gint rid_ext_id;
int substream;
int substream_target, substream_target_temp;
int templayer;
int templayer_target;
guint32 drop_trigger;
gint64 last_relayed;
gboolean changed_substream;
gboolean changed_temporal;
gboolean need_pli;
} janus_rtp_simulcasting_context;
void janus_rtp_simulcasting_context_reset(janus_rtp_simulcasting_context *context);
void janus_rtp_simulcasting_prepare(json_t *simulcast, int *rid_ext_id, uint32_t *ssrcs, char **rids);
void janus_rtp_simulcasting_cleanup(int *rid_ext_id, uint32_t *ssrcs, char **rids, janus_mutex *rid_mutex);
gboolean janus_rtp_simulcasting_context_process_rtp(janus_rtp_simulcasting_context *context,
char *buf, int len, uint32_t *ssrcs, char **rids,
janus_videocodec vcodec, janus_rtp_switching_context *sc, janus_mutex *rid_mutex);
typedef struct janus_av1_svc_context {
uint8_t tcnt;
uint8_t tioff;
GHashTable *templates;
int spatial_layers, temporal_layers;
gboolean updated;
} janus_av1_svc_context;
typedef struct janus_av1_svc_template {
uint8_t id;
int spatial;
int temporal;
} janus_av1_svc_template;
void janus_av1_svc_context_reset(janus_av1_svc_context *context);
gboolean janus_av1_svc_context_process_dd(janus_av1_svc_context *context,
uint8_t *dd, int dd_len, uint8_t *template_id);
#endif
janus_mutex
GMutex janus_mutex
Janus mutex implementation.
Definition mutex.h:73
plugin.h
Plugin-Core communication (implementation).
json_t
struct json_t json_t
Definition plugin.h:236
janus_videocodec_name
const char * janus_videocodec_name(janus_videocodec vcodec)
Definition rtp.c:968
janus_rtp_header_extension_set_abs_send_time
int janus_rtp_header_extension_set_abs_send_time(char *buf, int len, int id, uint32_t abs_ts)
Helper to set an abs-send-time RTP extension (http://www.webrtc.org/experiments/rtp-hdrext/abs-send-t...
Definition rtp.c:353
janus_rtp_skew_compensate_audio
int janus_rtp_skew_compensate_audio(janus_rtp_header *header, janus_rtp_switching_context *context, gint64 now)
Use the context info to compensate for audio source skew, if needed.
Definition rtp.c:498
janus_rtp_header_update
void janus_rtp_header_update(janus_rtp_header *header, janus_rtp_switching_context *context, gboolean video, int step)
Use the context info to update the RTP header of a packet, if needed.
Definition rtp.c:728
janus_av1_svc_context_reset
void janus_av1_svc_context_reset(janus_av1_svc_context *context)
Set (or reset) the context fields to their default values.
Definition rtp.c:1241
janus_rtp_switching_context_reset
void janus_rtp_switching_context_reset(janus_rtp_switching_context *context)
Set (or reset) the context fields to their default values.
Definition rtp.c:491
janus_audiocodec
janus_audiocodec
Definition rtp.h:99
JANUS_AUDIOCODEC_PCMU
@ JANUS_AUDIOCODEC_PCMU
Definition rtp.h:104
JANUS_AUDIOCODEC_MULTIOPUS
@ JANUS_AUDIOCODEC_MULTIOPUS
Definition rtp.h:102
JANUS_AUDIOCODEC_L16_48K
@ JANUS_AUDIOCODEC_L16_48K
Definition rtp.h:109
JANUS_AUDIOCODEC_OPUSRED
@ JANUS_AUDIOCODEC_OPUSRED
Definition rtp.h:103
JANUS_AUDIOCODEC_NONE
@ JANUS_AUDIOCODEC_NONE
Definition rtp.h:100
JANUS_AUDIOCODEC_ISAC_32K
@ JANUS_AUDIOCODEC_ISAC_32K
Definition rtp.h:107
JANUS_AUDIOCODEC_L16_16K
@ JANUS_AUDIOCODEC_L16_16K
Definition rtp.h:110
JANUS_AUDIOCODEC_G722
@ JANUS_AUDIOCODEC_G722
Definition rtp.h:106
JANUS_AUDIOCODEC_OPUS
@ JANUS_AUDIOCODEC_OPUS
Definition rtp.h:101
JANUS_AUDIOCODEC_PCMA
@ JANUS_AUDIOCODEC_PCMA
Definition rtp.h:105
JANUS_AUDIOCODEC_ISAC_16K
@ JANUS_AUDIOCODEC_ISAC_16K
Definition rtp.h:108
janus_rtp_simulcasting_context_reset
void janus_rtp_simulcasting_context_reset(janus_rtp_simulcasting_context *context)
Set (or reset) the context fields to their default values.
Definition rtp.c:1023
janus_audiocodec_from_name
janus_audiocodec janus_audiocodec_from_name(const char *name)
Definition rtp.c:912
janus_rtp_header_extension_parse_dependency_desc
int janus_rtp_header_extension_parse_dependency_desc(char *buf, int len, int id, uint8_t *dd_item, int *dd_len)
Helper to parse a dependency descriptor RTP extension (https://aomediacodec.github....
Definition rtp.c:313
janus_rtp_simulcasting_cleanup
void janus_rtp_simulcasting_cleanup(int *rid_ext_id, uint32_t *ssrcs, char **rids, janus_mutex *rid_mutex)
Helper method to cleanup some or all of the simulcasting info (rids and/or SSRCs) we may have prepare...
Definition rtp.c:1064
janus_rtp_header_extension_replace_id
int janus_rtp_header_extension_replace_id(char *buf, int len, int id, int new_id)
Helper to replace the ID of an RTP extension with a different one (e.g., to turn a repaired-rtp-strea...
Definition rtp.c:401
janus_rtp_header_extension_set_transport_wide_cc
int janus_rtp_header_extension_set_transport_wide_cc(char *buf, int len, int id, uint16_t transSeqNum)
Helper to set a transport wide sequence number (https://tools.ietf.org/html/draft-holmer-rmcat-transp...
Definition rtp.c:387
janus_rtp_simulcasting_context_process_rtp
gboolean janus_rtp_simulcasting_context_process_rtp(janus_rtp_simulcasting_context *context, char *buf, int len, uint32_t *ssrcs, char **rids, janus_videocodec vcodec, janus_rtp_switching_context *sc, janus_mutex *rid_mutex)
Process an RTP packet, and decide whether this should be relayed or not, updating the context accordi...
Definition rtp.c:1084
janus_videocodec
janus_videocodec
Definition rtp.h:116
JANUS_VIDEOCODEC_NONE
@ JANUS_VIDEOCODEC_NONE
Definition rtp.h:117
JANUS_VIDEOCODEC_H264
@ JANUS_VIDEOCODEC_H264
Definition rtp.h:120
JANUS_VIDEOCODEC_AV1
@ JANUS_VIDEOCODEC_AV1
Definition rtp.h:121
JANUS_VIDEOCODEC_VP9
@ JANUS_VIDEOCODEC_VP9
Definition rtp.h:119
JANUS_VIDEOCODEC_VP8
@ JANUS_VIDEOCODEC_VP8
Definition rtp.h:118
JANUS_VIDEOCODEC_H265
@ JANUS_VIDEOCODEC_H265
Definition rtp.h:122
janus_rtp_header_extension_parse_abs_sent_time
int janus_rtp_header_extension_parse_abs_sent_time(char *buf, int len, int id, uint32_t *abs_ts)
Helper to parse an abs-send-time RTP extension (http://www.webrtc.org/experiments/rtp-hdrext/abs-send...
Definition rtp.c:336
janus_rtp_header_extension_get_from_id
const char * janus_rtp_header_extension_get_from_id(const char *sdp, int id)
Ugly and dirty helper to quickly get the RTP extension namespace associated with an id (extmap) in an...
Definition rtp.c:81
janus_videocodec_pt
int janus_videocodec_pt(janus_videocodec vcodec)
Definition rtp.c:1003
janus_rtp_header_extension_parse_playout_delay
int janus_rtp_header_extension_parse_playout_delay(char *buf, int len, int id, uint16_t *min_delay, uint16_t *max_delay)
Helper to parse a playout-delay RTP extension (https://webrtc.org/experiments/rtp-hdrext/playout-dela...
Definition rtp.c:251
janus_rtp_header_extension_parse_transport_wide_cc
int janus_rtp_header_extension_parse_transport_wide_cc(char *buf, int len, int id, uint16_t *transSeqNum)
Helper to parse a transport wide sequence number (https://tools.ietf.org/html/draft-holmer-rmcat-tran...
Definition rtp.c:367
janus_av1_svc_context_process_dd
gboolean janus_av1_svc_context_process_dd(janus_av1_svc_context *context, uint8_t *dd, int dd_len, uint8_t *template_id)
Process a Dependency Descriptor payload, updating the SVC context accordingly.
Definition rtp.c:1250
janus_rtp_payload
char * janus_rtp_payload(char *buf, int len, int *plen)
Helper to quickly access the RTP payload, skipping header and extensions.
Definition rtp.c:26
janus_rtp_header
rtp_header janus_rtp_header
Definition rtp.h:57
janus_rtp_header_extension_parse_mid
int janus_rtp_header_extension_parse_mid(char *buf, int len, int id, char *sdes_item, int sdes_len)
Helper to parse a sdes-mid RTP extension (https://tools.ietf.org/html/draft-ietf-mmusic-sdp-bundle-ne...
Definition rtp.c:270
janus_videocodec_from_name
janus_videocodec janus_videocodec_from_name(const char *name)
Definition rtp.c:987
janus_rtp_header_extension_parse_rid
int janus_rtp_header_extension_parse_rid(char *buf, int len, int id, char *sdes_item, int sdes_len)
Helper to parse a rtp-stream-id RTP extension (https://tools.ietf.org/html/draft-ietf-avtext-rid-09).
Definition rtp.c:291
janus_rtp_header_extension_parse_video_orientation
int janus_rtp_header_extension_parse_video_orientation(char *buf, int len, int id, gboolean *c, gboolean *f, gboolean *r1, gboolean *r0)
Helper to parse a video-orientation RTP extension (http://www.3gpp.org/ftp/Specs/html-info/26114....
Definition rtp.c:229
janus_rtp_simulcasting_prepare
void janus_rtp_simulcasting_prepare(json_t *simulcast, int *rid_ext_id, uint32_t *ssrcs, char **rids)
Helper method to prepare the simulcasting info (rids and/or SSRCs) from the simulcast object the core...
Definition rtp.c:1034
janus_audiocodec_name
const char * janus_audiocodec_name(janus_audiocodec acodec)
Definition rtp.c:883
janus_audiocodec_pt
int janus_audiocodec_pt(janus_audiocodec acodec)
Definition rtp.c:938
janus_is_rtp
gboolean janus_is_rtp(char *buf, guint len)
Helper method to demultiplex RTP from other protocols.
Definition rtp.c:19
janus_rtp_header_extension_get_id
int janus_rtp_header_extension_get_id(const char *sdp, const char *extension)
Ugly and dirty helper to quickly get the id associated with an RTP extension (extmap) in an SDP.
Definition rtp.c:52
janus_rtp_header_extension_parse_audio_level
int janus_rtp_header_extension_parse_audio_level(char *buf, int len, int id, gboolean *vad, int *level)
Helper to parse a ssrc-audio-level RTP extension (https://tools.ietf.org/html/rfc6464).
Definition rtp.c:214
janus_rtp_extension_id
int janus_rtp_extension_id(const char *type)
Definition rtp.c:466
janus_rtp_skew_compensate_video
int janus_rtp_skew_compensate_video(janus_rtp_header *header, janus_rtp_switching_context *context, gint64 now)
Use the context info to compensate for video source skew, if needed.
Definition rtp.c:614
janus_av1_svc_context
Helper struct for processing and tracking AV1-SVC streams.
Definition rtp.h:365
janus_av1_svc_context::tcnt
uint8_t tcnt
Number of templates advertised via Dependency Descriptor.
Definition rtp.h:367
janus_av1_svc_context::spatial_layers
int spatial_layers
How many spatial and temporal layers are available.
Definition rtp.h:373
janus_av1_svc_context::templates
GHashTable * templates
Map of templates advertised via Dependency Descriptor, indexed by ID.
Definition rtp.h:371
janus_av1_svc_context::updated
gboolean updated
Whether this context changed since the last update.
Definition rtp.h:375
janus_av1_svc_context::tioff
uint8_t tioff
Template ID offset, as advertised via Dependency Descriptor.
Definition rtp.h:369
janus_av1_svc_context::temporal_layers
int temporal_layers
Definition rtp.h:373
janus_av1_svc_template
Helper struct to track SVC templates.
Definition rtp.h:381
janus_av1_svc_template::id
uint8_t id
Template ID.
Definition rtp.h:383
janus_av1_svc_template::spatial
int spatial
Spatial layer associated to this template.
Definition rtp.h:385
janus_av1_svc_template::temporal
int temporal
Temporal layer associated to this template.
Definition rtp.h:387
janus_plugin_rtp_extensions
Janus plugin RTP extensions.
Definition plugin.h:558
janus_rtp_header_extension
RTP extension.
Definition rtp.h:69
janus_rtp_header_extension::length
uint16_t length
Definition rtp.h:71
janus_rtp_header_extension::type
uint16_t type
Definition rtp.h:70
janus_rtp_packet
RTP packet.
Definition rtp.h:60
janus_rtp_packet::data
char * data
Definition rtp.h:61
janus_rtp_packet::last_retransmit
gint64 last_retransmit
Definition rtp.h:64
janus_rtp_packet::length
gint length
Definition rtp.h:62
janus_rtp_packet::created
gint64 created
Definition rtp.h:63
janus_rtp_packet::extensions
janus_plugin_rtp_extensions extensions
Definition rtp.h:65
janus_rtp_simulcasting_context
Helper struct for processing and tracking simulcast streams.
Definition rtp.h:301
janus_rtp_simulcasting_context::changed_temporal
gboolean changed_temporal
Whether the temporal layer has changed after processing a packet.
Definition rtp.h:319
janus_rtp_simulcasting_context::templayer_target
int templayer_target
As above, but to handle transitions (e.g., wait for keyframe).
Definition rtp.h:311
janus_rtp_simulcasting_context::substream_target
int substream_target
As above, but to handle transitions (e.g., wait for keyframe, or get this if available).
Definition rtp.h:307
janus_rtp_simulcasting_context::rid_ext_id
gint rid_ext_id
RTP Stream extension ID, if any.
Definition rtp.h:303
janus_rtp_simulcasting_context::changed_substream
gboolean changed_substream
Whether the substream has changed after processing a packet.
Definition rtp.h:317
janus_rtp_simulcasting_context::drop_trigger
guint32 drop_trigger
How much time (in us, default 250000) without receiving packets will make us drop to the substream be...
Definition rtp.h:313
janus_rtp_simulcasting_context::substream_target_temp
int substream_target_temp
Definition rtp.h:307
janus_rtp_simulcasting_context::templayer
int templayer
Which simulcast temporal layer we should forward back.
Definition rtp.h:309
janus_rtp_simulcasting_context::substream
int substream
Which simulcast substream we should forward back.
Definition rtp.h:305
janus_rtp_simulcasting_context::need_pli
gboolean need_pli
Whether we need to send the user a keyframe request (PLI).
Definition rtp.h:321
janus_rtp_simulcasting_context::last_relayed
gint64 last_relayed
When we relayed the last packet (used to detect when substreams become unavailable).
Definition rtp.h:315
janus_rtp_switching_context
RTP context, in order to make sure SSRC changes result in coherent seq/ts increases.
Definition rtp.h:259
janus_rtp_switching_context::prev_ts
uint32_t prev_ts
Definition rtp.h:260
janus_rtp_switching_context::last_ssrc
uint32_t last_ssrc
Definition rtp.h:260
janus_rtp_switching_context::reference_time
gint64 reference_time
Definition rtp.h:265
janus_rtp_switching_context::start_ts
uint32_t start_ts
Definition rtp.h:260
janus_rtp_switching_context::base_seq
uint16_t base_seq
Definition rtp.h:261
janus_rtp_switching_context::target_ts
uint32_t target_ts
Definition rtp.h:260
janus_rtp_switching_context::evaluating_start_time
gint64 evaluating_start_time
Definition rtp.h:265
janus_rtp_switching_context::ts_reset
gboolean ts_reset
Definition rtp.h:262
janus_rtp_switching_context::base_ts
uint32_t base_ts
Definition rtp.h:260
janus_rtp_switching_context::prev_seq
uint16_t prev_seq
Definition rtp.h:261
janus_rtp_switching_context::last_seq
uint16_t last_seq
Definition rtp.h:261
janus_rtp_switching_context::new_ssrc
gboolean new_ssrc
Definition rtp.h:262
janus_rtp_switching_context::prev_delay
gint32 prev_delay
Definition rtp.h:264
janus_rtp_switching_context::active_delay
gint32 active_delay
Definition rtp.h:264
janus_rtp_switching_context::last_ts
uint32_t last_ts
Definition rtp.h:260
janus_rtp_switching_context::seq_offset
gint16 seq_offset
Definition rtp.h:263
janus_rtp_switching_context::start_time
gint64 start_time
Definition rtp.h:265
janus_rtp_switching_context::last_time
gint64 last_time
Definition rtp.h:265
janus_rtp_switching_context::base_ts_prev
uint32_t base_ts_prev
Definition rtp.h:260
janus_rtp_switching_context::seq_reset
gboolean seq_reset
Definition rtp.h:262
janus_rtp_switching_context::base_seq_prev
uint16_t base_seq_prev
Definition rtp.h:261
janus_rtp_switching_context::ts_offset
gint32 ts_offset
Definition rtp.h:264
rtp_header
RTP Header (http://tools.ietf.org/html/rfc3550#section-5.1).
Definition rtp.h:36
rtp_header::extension
uint16_t extension
Definition rtp.h:40
rtp_header::timestamp
uint32_t timestamp
Definition rtp.h:53
rtp_header::padding
uint16_t padding
Definition rtp.h:39
rtp_header::csrc
uint32_t csrc[16]
Definition rtp.h:55
rtp_header::csrccount
uint16_t csrccount
Definition rtp.h:41
rtp_header::type
uint16_t type
Definition rtp.h:43
rtp_header::ssrc
uint32_t ssrc
Definition rtp.h:54
rtp_header::seq_number
uint16_t seq_number
Definition rtp.h:52
rtp_header::version
uint16_t version
Definition rtp.h:38
rtp_header::markerbit
uint16_t markerbit
Definition rtp.h:42