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rtcp.h
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1 
16 #ifndef JANUS_RTCP_H
17 #define JANUS_RTCP_H
18 
19 #include <arpa/inet.h>
20 #ifdef __MACH__
21 #include <machine/endian.h>
22 #else
23 #include <endian.h>
24 #endif
25 #include <inttypes.h>
26 #include <string.h>
27 
29 typedef enum {
30  RTCP_FIR = 192,
31  RTCP_SR = 200,
32  RTCP_RR = 201,
33  RTCP_SDES = 202,
34  RTCP_BYE = 203,
35  RTCP_APP = 204,
36  RTCP_RTPFB = 205,
37  RTCP_PSFB = 206,
38  RTCP_XR = 207,
39 } rtcp_type;
41 
42 
44 typedef struct rtcp_header
45 {
46 #if __BYTE_ORDER == __BIG_ENDIAN
47  uint16_t version:2;
48  uint16_t padding:1;
49  uint16_t rc:5;
50  uint16_t type:8;
51 #elif __BYTE_ORDER == __LITTLE_ENDIAN
52  uint16_t rc:5;
53  uint16_t padding:1;
54  uint16_t version:2;
55  uint16_t type:8;
56 #endif
57  uint16_t length:16;
60 
62 typedef struct sender_info
63 {
64  uint32_t ntp_ts_msw;
65  uint32_t ntp_ts_lsw;
66  uint32_t rtp_ts;
67  uint32_t s_packets;
68  uint32_t s_octets;
71 
73 typedef struct report_block
74 {
75  uint32_t ssrc;
76  uint32_t flcnpl;
77  uint32_t ehsnr;
78  uint32_t jitter;
79  uint32_t lsr;
80  uint32_t delay;
83 
85 typedef struct rtcp_sr
86 {
88  uint32_t ssrc;
93 
95 typedef struct rtcp_rr
96 {
98  uint32_t ssrc;
102 
104 typedef struct rtcp_sdes_chunk
105 {
106  uint32_t ssrc;
109 
110 typedef struct rtcp_sdes_item
111 {
112  uint8_t type;
113  uint8_t len;
114  char content[1];
117 
118 typedef struct rtcp_sdes
119 {
125 
127 typedef struct rtcp_bye
128 {
130  uint32_t ssrc[1];
133 
135 typedef struct rtcp_app
136 {
138  uint32_t ssrc;
139  char name[4];
142 
144 typedef struct rtcp_nack
145 {
147  uint16_t pid;
149  uint16_t blp;
152 
154 typedef struct janus_nack {
156  uint16_t seq_no;
158  struct janus_nack *next;
160 
161 
163 typedef struct rtcp_remb
164 {
166  char id[4];
168  uint32_t bitrate;
170  uint32_t ssrc[3];
173 
174 
176 typedef struct rtcp_fir
177 {
179  uint32_t ssrc;
181  uint32_t seqnr;
184 
185 
187 typedef struct rtcp_fb
188 {
192  uint32_t ssrc;
194  uint32_t media;
196  char fci[1];
199 
201 typedef struct extended_report_block
202 {
204  uint8_t blocktype;
206  uint8_t typesp;
208  uint16_t length;
210  char content[1];
211 
214 
216 typedef struct rtcp_xr
217 {
219  uint32_t ssrc;
223 
224 
226 typedef struct rtcp_context
227 {
228  /* Whether we received any RTP packet at all (don't send RR otherwise) */
229  uint8_t rtp_recvd:1;
232 
233  uint16_t max_seq_nr;
234  uint16_t seq_cycle;
235  uint16_t base_seq;
236  /* Payload type */
237  uint16_t pt;
238 
239  /* RFC 3550 A.8 Interarrival Jitter */
240  int64_t transit;
242  /* Timestamp base (e.g., 48000 for opus audio, or 90000 for video) */
243  uint32_t tb;
244 
245  /* Last SR received */
246  uint32_t lsr;
247  /* Monotonic time of last SR received */
248  int64_t lsr_ts;
249 
250  /* Last RR/SR we sent */
251  int64_t last_sent;
252 
253  /* Estimated round-trip time */
254  uint32_t rtt;
255 
256  /* RFC 3550 A.3 */
257  uint32_t received;
258  uint32_t received_prior;
259  uint32_t expected;
260  uint32_t expected_prior;
261  uint32_t lost, lost_remote;
262 
263  uint32_t retransmitted;
265 
266  /* Inbound RR process */
267  int64_t rr_last_ts;
268  uint32_t rr_last_ehsnr;
269  uint32_t rr_last_lost;
273 
274  /* Link quality estimations */
279 
280  /* TODO Incoming transport-wide CC feedback*/
281 
284 
287 {
291  guint64 timestamp;
294 
303 uint32_t janus_rtcp_context_get_lost_all(janus_rtcp_context *ctx, gboolean remote);
308 uint32_t janus_rtcp_context_get_jitter(janus_rtcp_context *ctx, gboolean remote);
330 void janus_rtcp_swap_report_blocks(char *packet, int len, uint32_t rtx_ssrc);
335 guint32 janus_rtcp_get_sender_ssrc(char *packet, int len);
340 guint32 janus_rtcp_get_receiver_ssrc(char *packet, int len);
341 
347 gboolean janus_rtcp_check_len(janus_rtcp_header *rtcp, int len);
352 gboolean janus_rtcp_check_rr(janus_rtcp_header *rtcp, int len);
357 gboolean janus_rtcp_check_sr(janus_rtcp_header *rtcp, int len);
364 gboolean janus_rtcp_check_fci(janus_rtcp_header *rtcp, int len, int sizeof_fci);
369 gboolean janus_rtcp_check_remb(janus_rtcp_header *rtcp, int len);
370 
374 gboolean janus_is_rtcp(char *buf, guint len);
375 
381 int janus_rtcp_parse(janus_rtcp_context *ctx, char *packet, int len);
382 
393 int janus_rtcp_fix_report_data(char *packet, int len, uint32_t base_ts, uint32_t base_ts_prev, uint32_t ssrc_peer, uint32_t ssrc_local, uint32_t ssrc_expected, gboolean video);
394 
403 int janus_rtcp_fix_ssrc(janus_rtcp_context *ctx, char *packet, int len, int fixssrc, uint32_t newssrcl, uint32_t newssrcr);
404 
410 char *janus_rtcp_filter(char *packet, int len, int *newlen);
411 
421 int janus_rtcp_process_incoming_rtp(janus_rtcp_context *ctx, char *packet, int len,
422  gboolean rfc4588_pkt, gboolean rfc4588_enabled, gboolean retransmissions_disabled,
423  GHashTable *clock_rates);
424 
430 
439 gboolean janus_rtcp_parse_lost_info(char *packet, int len, uint32_t *lost, int *fraction);
440 
445 gboolean janus_rtcp_has_bye(char *packet, int len);
446 
451 gboolean janus_rtcp_has_fir(char *packet, int len);
452 
457 gboolean janus_rtcp_has_pli(char *packet, int len);
458 
463 GSList *janus_rtcp_get_nacks(char *packet, int len);
464 
473 int janus_rtcp_remove_nacks(char *packet, int len);
474 
479 uint32_t janus_rtcp_get_remb(char *packet, int len);
480 
486 int janus_rtcp_cap_remb(char *packet, int len, uint32_t bitrate);
487 
494 int janus_rtcp_sdes_cname(char *packet, int len, const char *cname, int cnamelen);
495 
501 int janus_rtcp_remb(char *packet, int len, uint32_t bitrate);
502 
509 int janus_rtcp_remb_ssrcs(char *packet, int len, uint32_t bitrate, uint8_t numssrc);
510 
516 int janus_rtcp_fir(char *packet, int len, int *seqnr);
517 
524 int janus_rtcp_fir_legacy(char *packet, int len, int *seqnr);
525 
530 int janus_rtcp_pli(char *packet, int len);
531 
537 int janus_rtcp_nacks(char *packet, int len, GSList *nacks);
538 
547 int janus_rtcp_transport_wide_cc_feedback(char *packet, size_t len, guint32 ssrc, guint32 media, guint8 feedback_packet_count, GQueue *transport_wide_cc_stats);
548 
549 #endif
janus_rtcp_has_pli
gboolean janus_rtcp_has_pli(char *packet, int len)
Method to check whether an RTCP message contains a PLI request.
Definition: rtcp.c:1131
janus_extended_report_block
extended_report_block janus_extended_report_block
Definition: rtcp.h:213
janus_rtcp_rr
rtcp_rr janus_rtcp_rr
Definition: rtcp.h:101
rtcp_rr::ssrc
uint32_t ssrc
Definition: rtcp.h:98
rtcp_sdes_item::len
uint8_t len
Definition: rtcp.h:113
RTCP_APP
@ RTCP_APP
Definition: rtcp.h:35
rtcp_nack::blp
uint16_t blp
bitmask of following lost packets
Definition: rtcp.h:149
rtcp_context::expected_prior
uint32_t expected_prior
Definition: rtcp.h:260
janus_rtcp_has_fir
gboolean janus_rtcp_has_fir(char *packet, int len)
Method to check whether an RTCP message contains a FIR request.
Definition: rtcp.c:1103
rtcp_context::rr_last_lost
uint32_t rr_last_lost
Definition: rtcp.h:269
rtcp_context::lost
uint32_t lost
Definition: rtcp.h:261
janus_rtcp_fb_remb
rtcp_remb janus_rtcp_fb_remb
Definition: rtcp.h:172
rtcp_context::retransmitted_prior
uint32_t retransmitted_prior
Definition: rtcp.h:264
rtcp_app
RTCP APP (http://tools.ietf.org/html/rfc3550#section-6.7)
Definition: rtcp.h:136
janus_nack::next
struct janus_nack * next
Next element in the linked list.
Definition: rtcp.h:158
rtcp_sdes::chunk
rtcp_sdes_chunk chunk
Definition: rtcp.h:121
report_block::lsr
uint32_t lsr
Definition: rtcp.h:79
rtcp_fb
RTCP-FB (http://tools.ietf.org/html/rfc4585)
Definition: rtcp.h:188
rtcp_bye
struct rtcp_bye rtcp_bye
RTCP BYE (http://tools.ietf.org/html/rfc3550#section-6.6)
extended_report_block
struct extended_report_block extended_report_block
RTCP Extended Report Block (https://tools.ietf.org/html/rfc3611#section-3)
janus_rtcp_has_bye
gboolean janus_rtcp_has_bye(char *packet, int len)
Method to check whether an RTCP message contains a BYE message.
Definition: rtcp.c:1075
rtcp_nack::pid
uint16_t pid
Packet ID.
Definition: rtcp.h:147
rtcp_app::header
rtcp_header header
Definition: rtcp.h:137
rtcp_sdes::header
rtcp_header header
Definition: rtcp.h:120
rtcp_header
RTCP Header (http://tools.ietf.org/html/rfc3550#section-6.1)
Definition: rtcp.h:45
rtcp_sdes_item
struct rtcp_sdes_item rtcp_sdes_item
janus_rtcp_parse
int janus_rtcp_parse(janus_rtcp_context *ctx, char *packet, int len)
Method to parse/validate an RTCP message.
Definition: rtcp.c:52
janus_rtcp_remb_ssrcs
int janus_rtcp_remb_ssrcs(char *packet, int len, uint32_t bitrate, uint8_t numssrc)
Method to generate a new RTCP REMB message to cap the reported bitrate, but for more SSRCs.
Definition: rtcp.c:1427
rtcp_sdes_item
Definition: rtcp.h:111
janus_rtcp_check_remb
gboolean janus_rtcp_check_remb(janus_rtcp_header *rtcp, int len)
Method to check if a RTCP packet could contain an AFB REMB Message.
Definition: rtcp.c:475
janus_rtcp_fix_ssrc
int janus_rtcp_fix_ssrc(janus_rtcp_context *ctx, char *packet, int len, int fixssrc, uint32_t newssrcl, uint32_t newssrcr)
Method to fix an RTCP message (http://tools.ietf.org/html/draft-ietf-straw-b2bua-rtcp-00)
Definition: rtcp.c:493
rtcp_remb::bitrate
uint32_t bitrate
Num SSRC, Br Exp, Br Mantissa (bit mask)
Definition: rtcp.h:168
rtcp_context::in_link_quality
double in_link_quality
Definition: rtcp.h:275
rtcp_context::rr_last_ts
int64_t rr_last_ts
Definition: rtcp.h:267
rtcp_fb::fci
char fci[1]
Feedback Control Information.
Definition: rtcp.h:196
rtcp_context::tb
uint32_t tb
Definition: rtcp.h:243
rtcp_sr::rb
report_block rb[1]
Definition: rtcp.h:90
janus_rtcp_nacks
int janus_rtcp_nacks(char *packet, int len, GSList *nacks)
Method to generate a new RTCP NACK message to report lost packets.
Definition: rtcp.c:1508
rtcp_sdes
Definition: rtcp.h:119
janus_rtcp_check_fci
gboolean janus_rtcp_check_fci(janus_rtcp_header *rtcp, int len, int sizeof_fci)
Method to check if a RTCP packet could contain a Feedback Message with a defined FCI size.
Definition: rtcp.c:442
janus_rtcp_transport_wide_cc_feedback
int janus_rtcp_transport_wide_cc_feedback(char *packet, size_t len, guint32 ssrc, guint32 media, guint8 feedback_packet_count, GQueue *transport_wide_cc_stats)
Method to generate a new RTCP transport wide message to report reception stats.
Definition: rtcp.c:1552
sender_info::rtp_ts
uint32_t rtp_ts
Definition: rtcp.h:66
RTCP_RR
@ RTCP_RR
Definition: rtcp.h:32
janus_rtcp_check_rr
gboolean janus_rtcp_check_rr(janus_rtcp_header *rtcp, int len)
Method to check if a RTCP packet could contain a Receiver Report.
Definition: rtcp.c:432
rtcp_transport_wide_cc_stats::transport_seq_num
guint32 transport_seq_num
Transwport wide sequence number.
Definition: rtcp.h:289
rtcp_context::out_link_quality
double out_link_quality
Definition: rtcp.h:277
rtcp_context::out_media_link_quality
double out_media_link_quality
Definition: rtcp.h:278
rtcp_context::jitter
double jitter
Definition: rtcp.h:241
janus_rtcp_get_nacks
GSList * janus_rtcp_get_nacks(char *packet, int len)
Method to parse an RTCP NACK message.
Definition: rtcp.c:1163
rtcp_sdes
struct rtcp_sdes rtcp_sdes
rtcp_nack
struct rtcp_nack rtcp_nack
RTCP NACK (http://tools.ietf.org/html/rfc4585#section-6.2.1)
janus_rtcp_context_get_lost_all
uint32_t janus_rtcp_context_get_lost_all(janus_rtcp_context *ctx, gboolean remote)
Method to retrieve the total number of lost packets from an existing RTCP context.
Definition: rtcp.c:912
janus_rtcp_context_get_out_media_link_quality
uint32_t janus_rtcp_context_get_out_media_link_quality(janus_rtcp_context *ctx)
Method to retrieve outbound media link quality from an existing RTCP context.
Definition: rtcp.c:908
sender_info::ntp_ts_lsw
uint32_t ntp_ts_lsw
Definition: rtcp.h:65
janus_rtcp_sdes_item
rtcp_sdes_item janus_rtcp_sdes_item
Definition: rtcp.h:116
report_block::ehsnr
uint32_t ehsnr
Definition: rtcp.h:77
rtcp_header::version
uint16_t version
Definition: rtcp.h:47
sender_info::s_packets
uint32_t s_packets
Definition: rtcp.h:67
rtcp_header
struct rtcp_header rtcp_header
RTCP Header (http://tools.ietf.org/html/rfc3550#section-6.1)
janus_rtcp_context_get_jitter
uint32_t janus_rtcp_context_get_jitter(janus_rtcp_context *ctx, gboolean remote)
Method to retrieve the jitter from an existing RTCP context.
Definition: rtcp.c:944
rtcp_sdes_item::type
uint8_t type
Definition: rtcp.h:112
rtcp_sdes_chunk::ssrc
uint32_t ssrc
Definition: rtcp.h:106
rtcp_context::lost_remote
uint32_t lost_remote
Definition: rtcp.h:261
rtcp_transport_wide_cc_stats
struct rtcp_transport_wide_cc_stats rtcp_transport_wide_cc_stats
Stores transport wide packet reception statistics.
janus_rtcp_header
rtcp_header janus_rtcp_header
Definition: rtcp.h:59
janus_rtcp_sdes_chunk
rtcp_sdes_chunk janus_rtcp_sdes_chunk
Definition: rtcp.h:108
janus_rtcp_filter
char * janus_rtcp_filter(char *packet, int len, int *newlen)
Method to filter an outgoing RTCP message (http://tools.ietf.org/html/draft-ietf-straw-b2bua-rtcp-00)
Definition: rtcp.c:732
rtcp_context::seq_cycle
uint16_t seq_cycle
Definition: rtcp.h:234
rtcp_context::lsr_ts
int64_t lsr_ts
Definition: rtcp.h:248
rtcp_rr
RTCP Receiver Report (http://tools.ietf.org/html/rfc3550#section-6.4.2)
Definition: rtcp.h:96
janus_rtcp_fir
int janus_rtcp_fir(char *packet, int len, int *seqnr)
Method to generate a new RTCP FIR message to request a key frame.
Definition: rtcp.c:1472
janus_rtcp_get_remb
uint32_t janus_rtcp_get_remb(char *packet, int len)
Inspect an existing RTCP REMB message to retrieve the reported bitrate.
Definition: rtcp.c:1286
rtcp_context
Internal RTCP state context (for RR/SR)
Definition: rtcp.h:227
rtcp_context::expected
uint32_t expected
Definition: rtcp.h:259
janus_rtcp_sdes_cname
int janus_rtcp_sdes_cname(char *packet, int len, const char *cname, int cnamelen)
Method to generate a new RTCP SDES message.
Definition: rtcp.c:1395
rtcp_fb::media
uint32_t media
Media source.
Definition: rtcp.h:194
rtcp_sdes::item
rtcp_sdes_item item
Definition: rtcp.h:122
rtcp_rr
struct rtcp_rr rtcp_rr
RTCP Receiver Report (http://tools.ietf.org/html/rfc3550#section-6.4.2)
rtcp_context::in_media_link_quality
double in_media_link_quality
Definition: rtcp.h:276
janus_rtcp_context_get_out_link_quality
uint32_t janus_rtcp_context_get_out_link_quality(janus_rtcp_context *ctx)
Method to retrieve outbound link quality from an existing RTCP context.
Definition: rtcp.c:904
rtcp_type
rtcp_type
RTCP Packet Types (http://www.networksorcery.com/enp/protocol/rtcp.htm)
Definition: rtcp.h:29
rtcp_context::transit
int64_t transit
Definition: rtcp.h:240
rtcp_transport_wide_cc_stats::timestamp
guint64 timestamp
Reception time.
Definition: rtcp.h:291
sender_info
struct sender_info sender_info
RTCP Sender Information (http://tools.ietf.org/html/rfc3550#section-6.4.1)
janus_rtcp_pli
int janus_rtcp_pli(char *packet, int len)
Method to generate a new RTCP PLI message to request a key frame.
Definition: rtcp.c:1494
report_block::delay
uint32_t delay
Definition: rtcp.h:80
janus_rtcp_fix_report_data
int janus_rtcp_fix_report_data(char *packet, int len, uint32_t base_ts, uint32_t base_ts_prev, uint32_t ssrc_peer, uint32_t ssrc_local, uint32_t ssrc_expected, gboolean video)
Method to fix incoming RTCP SR and RR data.
Definition: rtcp.c:1005
RTCP_PSFB
@ RTCP_PSFB
Definition: rtcp.h:37
report_block::jitter
uint32_t jitter
Definition: rtcp.h:78
rtcp_context::rr_last_ehsnr
uint32_t rr_last_ehsnr
Definition: rtcp.h:268
rtcp_xr
RTCP Extended Report (https://tools.ietf.org/html/rfc3611#section-2)
Definition: rtcp.h:217
janus_rtcp_transport_wide_cc_stats
rtcp_transport_wide_cc_stats janus_rtcp_transport_wide_cc_stats
Definition: rtcp.h:293
janus_rtcp_sdes
rtcp_sdes janus_rtcp_sdes
Definition: rtcp.h:124
rtcp_sr::si
sender_info si
Definition: rtcp.h:89
rtcp_context::rtt
uint32_t rtt
Definition: rtcp.h:254
janus_rtcp_xr
rtcp_xr janus_rtcp_xr
Definition: rtcp.h:222
rtcp_fir::ssrc
uint32_t ssrc
SSRC of the media sender that needs to send a key frame.
Definition: rtcp.h:179
janus_rtcp_get_receiver_ssrc
guint32 janus_rtcp_get_receiver_ssrc(char *packet, int len)
Method to quickly retrieve the received SSRC (needed for demuxing RTCP in BUNDLE)
Definition: rtcp.c:109
rtcp_context::received
uint32_t received
Definition: rtcp.h:257
rtcp_context::rtp_last_inorder_time
int64_t rtp_last_inorder_time
Definition: rtcp.h:231
janus_is_rtcp
gboolean janus_is_rtcp(char *buf, guint len)
Helper method to demultiplex RTCP from other protocols.
Definition: rtcp.c:45
janus_rtcp_app
rtcp_app janus_rtcp_app
Definition: rtcp.h:141
janus_rtcp_remb
int janus_rtcp_remb(char *packet, int len, uint32_t bitrate)
Method to generate a new RTCP REMB message to cap the reported bitrate.
Definition: rtcp.c:1422
rtcp_rr::rb
report_block rb[1]
Definition: rtcp.h:99
RTCP_RTPFB
@ RTCP_RTPFB
Definition: rtcp.h:36
RTCP_XR
@ RTCP_XR
Definition: rtcp.h:38
janus_nack
struct janus_nack janus_nack
Janus representation (linked list) of sequence numbers to send again.
rtcp_bye::header
rtcp_header header
Definition: rtcp.h:129
rtcp_fb::header
rtcp_header header
Common header.
Definition: rtcp.h:190
janus_rtcp_parse_lost_info
gboolean janus_rtcp_parse_lost_info(char *packet, int len, uint32_t *lost, int *fraction)
Method to quickly fetch the lost packets info from an RR packet, if present.
rtcp_app
struct rtcp_app rtcp_app
RTCP APP (http://tools.ietf.org/html/rfc3550#section-6.7)
janus_rtcp_get_sender_ssrc
guint32 janus_rtcp_get_sender_ssrc(char *packet, int len)
Method to quickly retrieve the sender SSRC (needed for demuxing RTCP in BUNDLE)
Definition: rtcp.c:56
janus_rtcp_type
rtcp_type janus_rtcp_type
Definition: rtcp.h:40
RTCP_SR
@ RTCP_SR
Definition: rtcp.h:31
rtcp_header::length
uint16_t length
Definition: rtcp.h:57
janus_report_block
report_block janus_report_block
Definition: rtcp.h:82
rtcp_transport_wide_cc_stats
Stores transport wide packet reception statistics.
Definition: rtcp.h:287
sender_info
RTCP Sender Information (http://tools.ietf.org/html/rfc3550#section-6.4.1)
Definition: rtcp.h:63
janus_rtcp_report_block
int janus_rtcp_report_block(janus_rtcp_context *ctx, janus_report_block *rb)
Method to fill in a Report Block in a Receiver Report.
Definition: rtcp.c:974
RTCP_FIR
@ RTCP_FIR
Definition: rtcp.h:30
rtcp_context::retransmitted
uint32_t retransmitted
Definition: rtcp.h:263
report_block::flcnpl
uint32_t flcnpl
Definition: rtcp.h:76
rtcp_header::rc
uint16_t rc
Definition: rtcp.h:49
report_block
RTCP Report Block (http://tools.ietf.org/html/rfc3550#section-6.4.1)
Definition: rtcp.h:74
sender_info::s_octets
uint32_t s_octets
Definition: rtcp.h:68
rtcp_sr::ssrc
uint32_t ssrc
Definition: rtcp.h:88
extended_report_block::length
uint16_t length
Block length.
Definition: rtcp.h:208
rtcp_xr::ssrc
uint32_t ssrc
Definition: rtcp.h:219
report_block::ssrc
uint32_t ssrc
Definition: rtcp.h:75
rtcp_context::sent_packets_since_last_rr
gint sent_packets_since_last_rr
Definition: rtcp.h:271
rtcp_context::jitter_remote
double jitter_remote
Definition: rtcp.h:241
rtcp_xr::header
rtcp_header header
Definition: rtcp.h:218
rtcp_context::rr_last_nack_count
uint32_t rr_last_nack_count
Definition: rtcp.h:270
janus_rtcp_nack
rtcp_nack janus_rtcp_nack
Definition: rtcp.h:151
janus_rtcp_cap_remb
int janus_rtcp_cap_remb(char *packet, int len, uint32_t bitrate)
Method to modify an existing RTCP REMB message to cap the reported bitrate.
Definition: rtcp.c:1330
rtcp_context::last_sent
int64_t last_sent
Definition: rtcp.h:251
rtcp_app::ssrc
uint32_t ssrc
Definition: rtcp.h:138
janus_nack::seq_no
uint16_t seq_no
Sequence number to send again.
Definition: rtcp.h:156
extended_report_block::blocktype
uint8_t blocktype
Block type (BT)
Definition: rtcp.h:204
RTCP_SDES
@ RTCP_SDES
Definition: rtcp.h:33
rtcp_context::pt
uint16_t pt
Definition: rtcp.h:237
janus_rtcp_context
rtcp_context janus_rtcp_context
Definition: rtcp.h:283
janus_rtcp_context_get_in_media_link_quality
uint32_t janus_rtcp_context_get_in_media_link_quality(janus_rtcp_context *ctx)
Method to retrieve inbound media link quality from an existing RTCP context.
Definition: rtcp.c:900
janus_rtcp_fir_legacy
int janus_rtcp_fir_legacy(char *packet, int len, int *seqnr)
Method to generate a new legacy RTCP FIR (RFC2032) message to request a key frame.
rtcp_remb
struct rtcp_remb rtcp_remb
RTCP REMB (http://tools.ietf.org/html/draft-alvestrand-rmcat-remb-03)
janus_nack
Janus representation (linked list) of sequence numbers to send again.
Definition: rtcp.h:154
rtcp_fir
RTCP FIR (http://tools.ietf.org/search/rfc5104#section-4.3.1.1)
Definition: rtcp.h:177
janus_rtcp_context_get_in_link_quality
uint32_t janus_rtcp_context_get_in_link_quality(janus_rtcp_context *ctx)
Method to retrieve inbound link quality from an existing RTCP context.
Definition: rtcp.c:896
rtcp_context::base_seq
uint16_t base_seq
Definition: rtcp.h:235
rtcp_context::received_prior
uint32_t received_prior
Definition: rtcp.h:258
rtcp_remb
RTCP REMB (http://tools.ietf.org/html/draft-alvestrand-rmcat-remb-03)
Definition: rtcp.h:164
rtcp_nack
RTCP NACK (http://tools.ietf.org/html/rfc4585#section-6.2.1)
Definition: rtcp.h:145
report_block
struct report_block report_block
RTCP Report Block (http://tools.ietf.org/html/rfc3550#section-6.4.1)
rtcp_bye
RTCP BYE (http://tools.ietf.org/html/rfc3550#section-6.6)
Definition: rtcp.h:128
rtcp_sr::header
rtcp_header header
Definition: rtcp.h:87
rtcp_context::rtp_recvd
uint8_t rtp_recvd
Definition: rtcp.h:229
rtcp_sr
RTCP Sender Report (http://tools.ietf.org/html/rfc3550#section-6.4.1)
Definition: rtcp.h:86
rtcp_context::max_seq_nr
uint16_t max_seq_nr
Definition: rtcp.h:233
janus_rtcp_fb
rtcp_fb janus_rtcp_fb
Definition: rtcp.h:198
rtcp_context::lsr
uint32_t lsr
Definition: rtcp.h:246
rtcp_context::rtp_last_inorder_ts
uint32_t rtp_last_inorder_ts
Definition: rtcp.h:230
janus_rtcp_bye
rtcp_bye janus_rtcp_bye
Definition: rtcp.h:132
extended_report_block::content
char content[1]
Content (variable length)
Definition: rtcp.h:210
rtcp_header::padding
uint16_t padding
Definition: rtcp.h:48
rtcp_sr
struct rtcp_sr rtcp_sr
RTCP Sender Report (http://tools.ietf.org/html/rfc3550#section-6.4.1)
extended_report_block
RTCP Extended Report Block (https://tools.ietf.org/html/rfc3611#section-3)
Definition: rtcp.h:202
rtcp_context::nack_count
gint nack_count
Definition: rtcp.h:272
janus_rtcp_swap_report_blocks
void janus_rtcp_swap_report_blocks(char *packet, int len, uint32_t rtx_ssrc)
Method to swap Report Blocks and move media RB in first position in case rtx SSRC comes first.
Definition: rtcp.c:157
rtcp_fir::seqnr
uint32_t seqnr
Sequence number (only the first 8 bits are used, the other 24 are reserved)
Definition: rtcp.h:181
sender_info::ntp_ts_msw
uint32_t ntp_ts_msw
Definition: rtcp.h:64
RTCP_BYE
@ RTCP_BYE
Definition: rtcp.h:34
rtcp_rr::header
rtcp_header header
Definition: rtcp.h:97
janus_rtcp_sr
rtcp_sr janus_rtcp_sr
Definition: rtcp.h:92
rtcp_fb
struct rtcp_fb rtcp_fb
RTCP-FB (http://tools.ietf.org/html/rfc4585)
rtcp_app::name
char name[4]
Definition: rtcp.h:139
rtcp_sdes_item::content
char content[1]
Definition: rtcp.h:114
janus_rtcp_remove_nacks
int janus_rtcp_remove_nacks(char *packet, int len)
Method to remove an RTCP NACK message.
Definition: rtcp.c:1231
rtcp_sdes_chunk
RTCP SDES (http://tools.ietf.org/html/rfc3550#section-6.5)
Definition: rtcp.h:105
janus_sender_info
sender_info janus_sender_info
Definition: rtcp.h:70
rtcp_sdes_chunk
struct rtcp_sdes_chunk rtcp_sdes_chunk
RTCP SDES (http://tools.ietf.org/html/rfc3550#section-6.5)
rtcp_fir
struct rtcp_fir rtcp_fir
RTCP FIR (http://tools.ietf.org/search/rfc5104#section-4.3.1.1)
rtcp_context
struct rtcp_context rtcp_context
Internal RTCP state context (for RR/SR)
janus_rtcp_check_sr
gboolean janus_rtcp_check_sr(janus_rtcp_header *rtcp, int len)
Method to check if a RTCP packet could contain a Sender Report.
Definition: rtcp.c:418
rtcp_header::type
uint16_t type
Definition: rtcp.h:50
janus_rtcp_check_len
gboolean janus_rtcp_check_len(janus_rtcp_header *rtcp, int len)
Method to check that a RTCP packet size is at least the minimum necessary (8 bytes) and to validate t...
Definition: rtcp.c:405
rtcp_remb::ssrc
uint32_t ssrc[3]
SSRC feedback (we expect at max three SSRCs in there)
Definition: rtcp.h:170
rtcp_fb::ssrc
uint32_t ssrc
Sender SSRC.
Definition: rtcp.h:192
rtcp_xr
struct rtcp_xr rtcp_xr
RTCP Extended Report (https://tools.ietf.org/html/rfc3611#section-2)
rtcp_xr::erb
extended_report_block erb[1]
Definition: rtcp.h:220
janus_rtcp_context_get_rtt
uint32_t janus_rtcp_context_get_rtt(janus_rtcp_context *ctx)
Method to retrieve the estimated round-trip time from an existing RTCP context.
Definition: rtcp.c:892
rtcp_bye::ssrc
uint32_t ssrc[1]
Definition: rtcp.h:130
janus_rtcp_fb_fir
rtcp_fir janus_rtcp_fb_fir
Definition: rtcp.h:183
extended_report_block::typesp
uint8_t typesp
Type-specific.
Definition: rtcp.h:206
janus_rtcp_process_incoming_rtp
int janus_rtcp_process_incoming_rtp(janus_rtcp_context *ctx, char *packet, int len, gboolean rfc4588_pkt, gboolean rfc4588_enabled, gboolean retransmissions_disabled, GHashTable *clock_rates)
Method to quickly process the header of an incoming RTP packet to update the associated RTCP context.
Definition: rtcp.c:810