mirror/galene
1
Fork 0
mirror of https://github.com/jech/galene.git synced 2024-11-21 16:15:57 +01:00
Code Activity

Merge GetRTP and Nack into GetPacket.

Browse source 
The two function were always called together.  This factors out
the NACKing logic into the track.
This commit is contained in:
Juliusz Chroboczek 2021-07-14 14:20:52 +02:00
parent 36d31f0db8
commit 3d2089f40f
3 changed files with 23 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
conn/conn.go
View file

@ -25,9 +25,9 @@ type UpTrack interface {
Kind() webrtc.RTPCodecType
Label() string
Codec() webrtc.RTPCodecCapability
// get a recent packet. Returns 0 if the packet is not in cache.
GetRTP(seqno uint16, result []byte) uint16
Nack(seqnos []uint16) error
// GetPacket fetches a recent packet. Returns 0 if the packet is
// not in cache, and, in that case, optionally schedules a NACK.
GetPacket(seqno uint16, result []byte, nack bool) uint16
RequestKeyframe() error
}

13
diskwriter/diskwriter.go
View file

@ -494,23 +494,18 @@ func (t *diskTrack) Write(buf []byte) (int, error) {
if ((p.SequenceNumber - lastSeqno) & 0x8000) == 0 {
count := p.SequenceNumber - lastSeqno
if count > 0 && count < 128 {
var nacks []uint16
for i := lastSeqno + 1; i != p.SequenceNumber; i++ {
// different buf each time
buf := make([]byte, 1504)
n := t.remote.GetRTP(i, buf)
if n > 0 {
n := t.remote.GetPacket(i, buf, true)
if n == 0 {
continue
}
p := new(rtp.Packet)
err := p.Unmarshal(buf)
if err == nil {
t.writeRTP(p)
}
} else {
nacks = append(nacks, i)
}
}
if len(nacks) > 0 {
t.remote.Nack(nacks)
}
}
}

33
rtpconn/rtpconn.go
View file

@ -430,10 +430,6 @@ func (up *rtpUpTrack) getLocal() []conn.DownTrack {
return local
}
func (up *rtpUpTrack) GetRTP(seqno uint16, result []byte) uint16 {
return up.cache.Get(seqno, result)
}
func (up *rtpUpTrack) Label() string {
return up.track.RID()
}
@ -712,7 +708,6 @@ func sendNACKs(pc *webrtc.PeerConnection, ssrc webrtc.SSRC, nacks []rtcp.NackPai
}
func gotNACK(track *rtpDownTrack, p *rtcp.TransportLayerNack) {
var unhandled []uint16
buf := make([]byte, packetcache.BufSize)
for _, nack := range p.Nacks {
nack.Range(func(s uint16) bool {
@ -720,9 +715,8 @@ func gotNACK(track *rtpDownTrack, p *rtcp.TransportLayerNack) {
if !ok {
return true
}
l := track.remote.GetRTP(seqno, buf)
l := track.remote.GetPacket(seqno, buf, true)
if l == 0 {
unhandled = append(unhandled, seqno)
return true
}
_, err := track.Write(buf[:l])
@ -733,33 +727,30 @@ func gotNACK(track *rtpDownTrack, p *rtcp.TransportLayerNack) {
return true
})
}
if len(unhandled) == 0 {
return
}
track.remote.Nack(unhandled)
}
func (track *rtpUpTrack) Nack(nacks []uint16) error {
func (track *rtpUpTrack) GetPacket(seqno uint16, result []byte, nack bool) uint16 {
n := track.cache.Get(seqno, result)
if n > 0 || !nack {
return n
}
track.mu.Lock()
defer track.mu.Unlock()
doit := len(track.bufferedNACKs) == 0
outer:
for _, nack := range nacks {
for _, seqno := range track.bufferedNACKs {
if seqno == nack {
continue outer
for _, s := range track.bufferedNACKs {
if s == seqno {
return 0
}
}
track.bufferedNACKs = append(track.bufferedNACKs, nack)
}
track.bufferedNACKs = append(track.bufferedNACKs, seqno)
if doit {
go nackWriter(track)
}
return nil
return 0
}
func rtcpUpListener(conn *rtpUpConnection, track *rtpUpTrack, r *webrtc.RTPReceiver) {