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826 commits 19 branches 32 tags 14 MiB
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164 commits

Author SHA1 Message Date
Juliusz Chroboczek
6aa7a9394a More tweaks to layer switching. 
I'm not seeing any non-keyframe spatial sync frames, so simplify
the code by only switching spatial layers on keyframes.
 2021-08-05 00:03:42 +02:00
Juliusz Chroboczek
9093339b62 Rework handling of buffered keyframes. 
Instead of buffering the last keyframe, we merely keep track of its
seqno, and use the main cache for recovering.  We also send the whole
sequence of packets rather than just the keyframe itself.
 2021-08-04 02:58:24 +02:00
Juliusz Chroboczek
f4aa86a491 Switch spatial layers at the right point. 2021-08-03 23:21:44 +02:00
Juliusz Chroboczek
48a9b10ce8 Use spatial scalability when simulcast is not available. 
If the client requested a low-resolution stream and there is none,
switch to SID=0.
 2021-08-03 13:14:11 +02:00
Juliusz Chroboczek
4f7be19644 Implement pid and mark rewriting for VP9, fix VP9 sync bits. 
The sync bits were incorrect.  In addition, we need to set the
marker at the new end of the frame when doing spatial decimation.
 2021-08-03 13:09:43 +02:00
Juliusz Chroboczek
56226a2934 Export the max requested rate in track statistics. 2021-08-03 03:28:36 +02:00
Juliusz Chroboczek
200c0dd68c Refresh layer info after adjusting in down.Write. 
Otherwise we might act on outdated info, which could cause a spurious
drop.
 2021-08-03 03:15:08 +02:00
Juliusz Chroboczek
3d21a79880 Don't carry up tracks explicitly. 
Left over from the old data structure.
 2021-08-03 02:51:44 +02:00
Juliusz Chroboczek
51c31ab729 Improve error handling for negotiation failures. 
Now that we constrain tracks in offers properly, there is no need
to manually check that the codecs have been matched correctly.
 2021-08-02 20:00:23 +02:00
Juliusz Chroboczek
816b7a54df Restrict negotiation of downstream codecs, allow multiple profiles. 
We now restrict the allowable codecs in the downstream direction,
which leads to a clean failure instead of a silent track.  We also
allow multiple profiles for a single codec.
 2021-08-02 18:08:37 +02:00
Juliusz Chroboczek
dd4dbeaee5 Add spatial scalability support. 
Only used as a last-resort fallback.
 2021-08-01 13:57:14 +02:00
Juliusz Chroboczek
efb298f002 Use sendonly transceiver for down tracks, embed receiver in track. 2021-08-01 13:33:01 +02:00
Juliusz Chroboczek
3bdcb8af28 Fix typo in down layer selection. 2021-07-31 23:22:01 +02:00
Juliusz Chroboczek
b527c8757a Add chathistory message. 2021-07-31 14:42:26 +02:00
Juliusz Chroboczek
97a5bf60ad Send the locked user-friendly message in the group status. 2021-07-30 19:44:39 +02:00
Juliusz Chroboczek
3b98e123e0 Send a message of kind "kicked" instead of "error". 2021-07-30 19:38:02 +02:00
Juliusz Chroboczek
a5c97fd849 Add System permission. 
This replaces the OverridePermissions method, and is communicated
to clients that can reliably and safely identify a system user.
 2021-07-30 19:26:34 +02:00
Juliusz Chroboczek
a8dfc32f9e Fix keyframe tests. 
The keyframe detection has been moved into codecs.
 2021-07-30 15:26:21 +02:00
Juliusz Chroboczek
89780b866b Move packet parsing code into its own package. 2021-07-29 21:30:39 +02:00
Juliusz Chroboczek
6388f16e87 Fix typos in infinite action stream implementation. 
This fixes issues introduced in commit 6ae79f.
 2021-07-17 00:05:55 +02:00
Juliusz Chroboczek
52a26327d7 Implement group status. 
We now inform clients of the status of a group (locked, etc.).  Also
cleans up the handling of administrative messages, which solves the
issue of receiving "user" before "joined".
 2021-07-16 19:51:54 +02:00
Juliusz Chroboczek
6ae79f21d6 Use unbounded buffer for track actions. 
Without that, we might deadlock if the reader is blocked in read.
 2021-07-16 03:03:45 +02:00
Juliusz Chroboczek
c540cad994 Move pushClientConnection into its own function. 2021-07-16 01:40:42 +02:00
Juliusz Chroboczek
053067548a Ensure that replaced down tracks are closed even on failure. 
Thanks to Ludovic Rateau.
 2021-07-15 23:52:03 +02:00
Juliusz Chroboczek
9b8d868647 Fix a race between delUpConn and addLocal. 
We could call addLocal after the remote was closed, which
would cause the local connection to remain forever.

Thanks to Ludovic Rateau.
 2021-07-15 16:03:06 +02:00
Juliusz Chroboczek
3d2089f40f Merge GetRTP and Nack into GetPacket. 
The two function were always called together.  This factors out
the NACKing logic into the track.
 2021-07-14 14:22:22 +02:00
Juliusz Chroboczek
36d31f0db8 Maintain a reference to the connection associated to each track. 
This avoids carrying an extra parameter in many places.
 2021-07-14 14:05:23 +02:00
Juliusz Chroboczek
f3b73263c8 Fix handling of NACKed packets when dropping. 
We were not rewriting in this case.
 2021-05-17 20:06:08 +02:00
Juliusz Chroboczek
22585e9d10 Handle spatial scalability. 
Maintain spatial layer information, and drop lower layers when
possible.  Yields a 20% saving with VP9.
 2021-05-17 18:17:43 +02:00
Juliusz Chroboczek
91fa693709 Display max layer in stats. 2021-05-17 13:51:29 +02:00
Juliusz Chroboczek
fd76abb61d Send up actions synchronously. 2021-05-17 03:54:58 +02:00
Juliusz Chroboczek
c00a21995e Move PLI rate-limiting into the reader loop. 2021-05-17 03:54:20 +02:00
Juliusz Chroboczek
d94e5583cd Rewrite AV1 keyframe detection. 
Metadata OBUs can appear between the sequence header and the first
frame header.
 2021-05-16 14:51:09 +02:00
Juliusz Chroboczek
4435a30a53 Use sequence parameter sets for h.264 keyframe detection. 
RFC 6184 Section 8.5.1 implies that the sender will send a
a sequence parameter set in response to PLI.  Since a keyframe is
useless without parameters, use the SPS to detect keyframes.
 2021-05-15 23:50:32 +02:00
Juliusz Chroboczek
3e00bb4293 AV1 support. 2021-05-15 19:54:07 +02:00
Juliusz Chroboczek
c0da658b9f Send sender report more often. 
Now that we start at 200kbps, we need to increase our rate faster.
 2021-05-14 23:21:14 +02:00
Juliusz Chroboczek
2da8faa8cf Implement per-stream requests. 2021-05-14 23:21:14 +02:00
Juliusz Chroboczek
515c4a5cd0 Rename pushConns to requestConns, move into Client interface. 
Also allow selecting just a single connection.
 2021-05-14 23:21:14 +02:00
Juliusz Chroboczek
435f46c520 Add tests for codec manipulation and rtpconn data stuctures. 2021-05-14 23:21:14 +02:00
Juliusz Chroboczek
6f9d7fc306 Scalable video coding (SVC). 2021-05-14 23:21:14 +02:00
Juliusz Chroboczek
7590588a54 Don't renegotiate if nothing changed during a request. 2021-05-14 18:19:44 +02:00
Juliusz Chroboczek
d236f4c6df Work around empty track id and msid. 2021-05-13 03:45:32 +02:00
Juliusz Chroboczek
5ad0244267 Allow the loss-based congestion controller to yield higher values. 2021-05-12 17:06:26 +02:00
Juliusz Chroboczek
1130295e0b Use strings.EqualFold for comparing codec names. 2021-05-12 16:18:23 +02:00
Juliusz Chroboczek
c53cc20d26 Use Write instead of WriteRTP in the downTrack interface. 2021-05-11 23:48:17 +02:00
Juliusz Chroboczek
b09dba0e26 Remove FIR sending code. 
We no longer send FIRs.
 2021-05-11 23:46:57 +02:00
Juliusz Chroboczek
d3f53e6ada Move rate estimation into rtpDownTrack.WriteRTP. 2021-05-11 22:45:33 +02:00
Juliusz Chroboczek
c52e1f4ce0 Move keyframe handling to the sender side. 
This is simpler and gets rid of ErrKeyframeNeeded.
 2021-05-11 22:36:56 +02:00
Juliusz Chroboczek
b2ea8e8533 Move isKeyframe into its own file. 2021-05-11 19:59:24 +02:00
Juliusz Chroboczek
26bf8a341a Don't send client parameters in delete message. 
This avoids a race condition since the delete messages are sent
asynchronously.
 2021-05-10 16:58:28 +02:00