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janus: ssrc per client

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This commit is contained in:
Maxim Devaev
2026-05-31 07:11:44 +03:00
parent 9fe42b038a
commit 4dc0f73e1b
7 changed files with 55 additions and 41 deletions
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15
janus/src/rtp.c
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@@ -44,9 +44,11 @@ void us_rtp_destroy(us_rtp_s *rtp) {
void us_rtp_assign(us_rtp_s *rtp, uint payload, bool video) {
rtp->payload = payload;
rtp->video = video;
rtp->ssrc = us_triple_u32(us_get_now_monotonic_u64());
}
#define WRITE_BE_U32(x_offset, x_value) \
*((u32*)(rtp->datagram + x_offset)) = __builtin_bswap32(x_value)
void us_rtp_write_header(us_rtp_s *rtp, u32 pts, bool last_header) {
u32 word0 = 0x80000000;
if (last_header) {
@@ -56,10 +58,13 @@ void us_rtp_write_header(us_rtp_s *rtp, u32 pts, bool last_header) {
word0 |= rtp->seq;
++rtp->seq;
# define WRITE_BE_U32(x_offset, x_value) \
*((u32*)(rtp->datagram + x_offset)) = __builtin_bswap32(x_value)
WRITE_BE_U32(0, word0);
WRITE_BE_U32(4, pts);
WRITE_BE_U32(8, rtp->ssrc);
# undef WRITE_BE_U32
WRITE_BE_U32(8, 0); // SSRC should be written separately for each client
}
void us_rtp_write_ssrc(us_rtp_s *rtp, u32 ssrc) {
WRITE_BE_U32(8, ssrc);
}
#undef WRITE_BE_U32