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rtpdec: Use our own SSRC in the SDES field when sending RRs

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The s->ssrc field is the sender's SSRC, we use ssrc + 1 to get
a collision free "unique" SSRC for ourselves in the RR part.
The SDES block in the RTCP packet should describe ourselves,
not the sender.

This was fixed for the RR part in 952139a322, but wasn't
fixed for the SDES part until now.

This could cause some Axis cameras to send RTCP BYE packets
to us due to the SSRC collision.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-01-21 17:20:45 +02:00
parent 4b63cc18bc
commit ad7beb2cac
1 changed files with 1 additions and 1 deletions
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2
libavformat/rtpdec.c
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@ -299,7 +299,7 @@ int ff_rtp_check_and_send_back_rr(RTPDemuxContext *s, int count)
avio_w8(pb, RTCP_SDES);
len = strlen(s->hostname);
avio_wb16(pb, (6 + len + 3) / 4); /* length in words - 1 */
avio_wb32(pb, s->ssrc);
avio_wb32(pb, s->ssrc + 1);
avio_w8(pb, 0x01);
avio_w8(pb, len);
avio_write(pb, s->hostname, len);